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33results about How to "Meet Residue Analysis Requirements" patented technology

Analyzing method for simultaneously determining residues of organophosphorus pesticides and pyrethriods pesticides in soil

The invention provides an analyzing method for simultaneously determining residues of organophosphorus pesticides and pyrethriods pesticides in soil. The analyzing method is characterized by comprising the following steps: carrying out ultrasonic extraction on a soil test sample by using an acetonitrile solution containing 1% of acetic acid by volume percent; purifying by using a suitable amount of PSA and C18 mixed fillers; blowing liquid supernatant by nitrogen and concentrating until the liquid supernatant is nearly dried; respectively dissolving by acetone and n-hexane and enabling the volume to be constant; raising the temperature by using DB-1701 and HP-5 quartz capillary columns and separating; carrying out GC / FPD (Gas Chromatograph / Flame Photometric Detector) detection and GC / micro ECD (Electron Capture Detector) detection; and finally, quantifying by using a base material external standard method. A test confirms that the method has a wide linear range; the technical indexes including detection sensitivity, accuracy and precision meet the requirements of a residue analysis; the pre-treatment operation is simple, convenient and rapid and a reliable manner is provided for analytical researches for simultaneously determining the residues of ths pesticides and the pyrethriods pesticides in the soil.e organophosphoru.
Owner:江苏太湖地区农业科学研究所

Quantitative detection method for pyrethriods pesticide in soil

The invention discloses a quantitative detection method for pyrethriods pesticide in soil. The method is characterized by comprising the following steps: carrying out ultrasonic extraction on a soil sample by using an acetonitrile solution of which the volume fraction is 1%, purifying by using proper mixed filler of PSA and C18; carrying out nitrogen blowing and concentrating on supernate until nearly dry; dissolving and metering volume by using normal hexane; heating up and separating by using HP-5 quartz capillary column program; carrying out GC / muECD detection; finally quantifying by using a matrix external standard method. A test proves that the method is wide in linear range, the technical indicators such as the detection sensitivity, the accuracy and the precision meet the requirements of residue analysis, the quantitative detection method is simple in pre-treatment operation, convenient and fast, and reliable means is provided for analysis and research of pyrethriods pesticide residue in the soil.
Owner:江苏太湖地区农业科学研究所

Quantitative detection method for pyrethriods pesticides in fresh tea

The invention discloses a quantitative detection method for pyrethriods pesticides in fresh tea. The quantitative detection method is characterized by comprising the following steps: ultrasonically extracting a fresh tea sample by an acetonitrile solution containing 1% of acetic acid in percentage by volume, then purifying by using an appropriate amount of mixed filler of PSA (Prostate Specific Antigen), C18 and GCB, carrying out nitrogen blowing to concentrate liquid supernatant to be nearly dry, dissolving with normal hexane and making up to volume, increasing programmed temperature and separating by using an HP-5 quartz capillary column, carrying out GC / muECD, and finally quantifying by using a matrix external standard method. Through confirmation by test, the method is wide in linear range; the technical indexes such as detection sensitivity, accuracy and precision meet the requirements of analysis of residues; the pretreatment operation is simple, convenient and quick; through the method, a reliable manner is provided for analysis and research for detecting the residues of the pyrethriods pesticides in the fresh tea.
Owner:江苏太湖地区农业科学研究所

Quantum dot-labeled antibody probe test strip as well as preparation method and application thereof

The invention belongs to the field of chemical detection, relates to a visualized and rapid detection method for detecting residual amount of benzothiostrobin in strawberries, and relates to pesticideresidue detection, in particular to a quantum dot-labeled antibody probe test strip as well as a preparation method and application thereof. The quantum dot-labeled antibody probe test strip comprises a bottom plate, a nitrocellulose membrane, a sample pad, a bonding pad and an absorption pad, wherein the nitrocellulose membrane is located on the bottom plate; the sample pad and the bonding pad are sequentially arranged on the bottom plate on the left side of the nitrocellulose membrane, and the absorption pad is arranged on the bottom plate on the right side of the nitrocellulose membrane; quantum dot-labeled antibody probes are distributed on the bonding pad; and benzothiostrobin antigens and goat-anti-mouse antibodies are further distributed on the nitrocellulose membrane. The invention provides the visualized and rapid detection test strip which is suitable for quantitatively detecting the residual amount of the benzothiostrobin in strawberries.
Owner:河南省农业科学院农业质量标准与检测技术研究所

Method for determining residual sedative type veterinary medicaments in mutton

The invention relates to a method for determining residual medicaments in mutton, and in particular relates to a method for determining multiple sedative type medicaments in mutton at the same time. The residual sedative type veterinary medicaments refer to zolpidem, haloperidol, chlordiazepoxide, promethazine, nitrazepam, chlorpromazine hydrochloride, perphenazine, fluphenazine hydrochloride, clonazepam, xylazine hydrochloride, propionylpromazine, carazolol, acepromazine, droperidol and azaperone. The method has the advantage that the residual amounts of 15 types of sedative type medicaments in mutton are determined through high-resolution liquid chromatography-tandem mass spectrometry. The method is high in sensitivity and high in recovery rate, and can meet the detection requirements on veterinary medicaments.
Owner:GANSU AGRI UNIV

Quantitative detection method for organophosphorus pesticide in soil

The invention discloses a quantitative detection method for an organophosphorus pesticide in soil. The method is characterized by comprising the following steps: carrying out ultrasonic extraction on a soil sample by using an acetonitrile solution of which the volume fraction is 1%; purifying by using proper mixed filler of PSA and C18; carrying out nitrogen blowing and concentrating on supernate until nearly dry; respectively dissolving and making to constant volume by using normal hexane; heating up and separating by using DB-1701 quartz capillary column program; carrying out GC / FPD detection; finally quantifying by using a matrix external standard method. A test proves that the method is wide in linear range, the technical indicators such as the detection sensitivity, the accuracy and the precision meet the requirements of residue analysis, the quantitative detection method is simple in pre-treatment operation, convenient and fast, and reliable means is provided for analysis and research of organophosphorus pesticide residue in the soil.
Owner:江苏太湖地区农业科学研究所

Analysis method applied to measuring residual quantity of sulfonylurea herbicide in plants

The invention discloses an analysis method applied to measuring residual quantity of sulfonylurea herbicide in plants. The method comprises the first step of preparing a stock solution, the second step of preparing extraction head through a QuEChERS method, the third step of processing samples and the fourth step of setting detection conditions of UPLC-MS / MS and conducting sample introduction. The method has the advantages that pretreatment is conducted through an extraction device, the sample purifying process is simple and quick, samples can be obtained through simple absorbing-pushing, results are accurate, and detection is quick; secondly, a sieve in the extraction head allows dispersion extraction, adsorbent, salt and other particulate matter can be removed out of the solution, the number of impurities is reduced, and convenience is brought to accurate quantitation; quantitation is accurate, sensitivity is high, operation is easy and quick, the consumption of the solvent is small, and the requirement for pesticide residue analysis can be met; the improved QuEChERS-method device is used for measuring the residue quantity of 10 kinds of sulfonylurea herbicide in plants.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA

Quantitative determination method for organophosphorus pesticides in fresh tea leaves

The invention provides a quantitative determination method for organophosphorus pesticides in fresh tea leaves. The quantitative determination method is characterized by comprising the following steps: carrying out ultrasonic extraction on fresh tea leaf test samples by using an acetonitrile solution containing 1% of acetic acid by volume percent; purifying by using a suitable amount of PSA (Primary Secondary Amine), C18 and GCB (Graphitized Carbon Black) mixed fillers; blowing liquid supernatant by nitrogen and concentrating until the liquid supernatant is nearly dried; dissolving by acetone and enabling the volume to be constant; raising the temperature by using a DB-1701 quartz capillary column and separating; carrying out GC / FPD (Gas Chromatograph / Flame Photometric Detector) detection; and finally, quantifying by using a base material external standard method. A test confirms that the method has a wide linear range; the technical indexes including detection sensitivity, accuracy and precision meet the requirements of a residue analysis; the pre-treatment operation is simple, convenient and rapid and a reliable manner is provided for analytical researches for determining the organophosphorus pesticides in fresh tea leaves.
Owner:江苏太湖地区农业科学研究所

Method for detecting various mushroom toxins in blood and urine

The invention discloses a method for detecting various mushroom toxins in blood and urine. Through the optimization on experimental conditions, the method for determining alpha-amanitin, beta-amanitin, gamma-amanitin, phalloidin, phallacidin, phallisacin contents in the blood and urine of poisoning patients by using ultra-high-performance liquid chromatography-mass spectrometry / mass spectrometry can be established for the first time. Thus, the scientific detection method can be provided for the disposal of emergency public health events.
Owner:刘思洁

Method for detecting residual amount of fluazuron in cattle tissues

InactiveCN102645495AMeet the requirements of drug residue analysisMeet Residue Analysis RequirementsComponent separationUltravioletColumn temperature
The invention belongs to the field of veterinary drug residue detection and particularly relates to a method for detecting the residual amount of fluazuron in cattle tissues (muscles, livers, kidneys and fat). The method includes the steps of subjecting a cattle tissue sample to extraction and purification, using acetonitrile-water as moving phase, and using a high performance liquid chromatography-ultraviolet detection method for detection, wherein the liquid chromatographic conditions include that the chromatographic column is Agilent C18, 5 mum, 150mm*4.6mm i.d.; the moving phase is the acetonitrile-water with a volume ratio of 68:32; the flow velocity is 1.2mL*min<-1>; the detection wavelength is 260 nm; the column temperature is 25 DEG C; and the sample introduction volume is 20 mL. According to the method for detecting the residual amount of the fluazuron in the cattle tissues, the limit of detection (LOD) of the fluazuron in the cattle tissues is 0.005mg*kg<-1>, the limit of qualification (LOQ) of the fat is 0.01mg*kg<-1> and the content of other tissues is 0.02mg*kg<-1>, and the requirement of the drug residue analysis of the fluazuron in foods of animal origin can be satisfied.
Owner:YANGZHOU UNIV

Method for determining seven degradation products of indoxacarb in tea leaves and tea soup based on ultra-high performance liquid chromatography tandem mass spectrometry

The invention discloses a method for determining seven degradation products of indoxacarb in tea leaves and tea soup based on ultra-high performance liquid chromatography tandem mass spectrometry, andbelongs to the technical field of tea pesticide residue detection. The method comprises the following steps: 1) sample extraction and purification: extracting a fresh leaf or tea sample with acetonitrile / water, carrying out C18 and GCB dispersive solid-phase extraction and purification, concentrating, and fixing the volume with methanol / water; or 1) enriching, purifying and leaching the PRPSPE column of the tea soup sample, eluting and receiving with methanol, concentrating, and fixing the volume with methanol / water; 2) performing ultra-high performance liquid chromatography tandem mass spectrometry by adopting C-2 chromatographic column separation to detect seven degradation products of indoxacarb; and (3) calculating the standard curve and the linear correlation coefficient of the indoxacarb degradation products, and (4) calculating the adding recovery rate, the relative standard deviation, the detection limit and the quantification limit. The method disclosed by the invention meetsresidue analysis requirements and can provide an analysis method for research and detection of seven degradation products of indoxacarb in fresh tea leaves, tea leaves and tea soup.
Owner:TEA RES INST CHINESE ACAD OF AGRI SCI

Method for measuring trace salbutamol in environmental sample

The invention discloses a method for measuring trace salbutamol in an environmental sample. The method comprises the following steps: preparing materials and reagents, preparing a buffer solution, selecting instruments, preparing a Eu3+ labeled goat anti-rabbit antibody, covering a microwell plate with a coating antigen in CBS, and performing incubation, performing culture in TBS by using OVA to block the microwell plate, adding a polyclonal antibody diluted by a methanol standard solution and PBS, adding a diluted Eu3+ labeled antibody in the PBS for incubation, adding an enhancement solution, performing mechanical oscillation, and using a microtitrimeter to measure the fluorescence intensity at an excitation wavelength of 340 nm, an emission wavelength of 615 nm, a delay time of 100 mu sand a window time of 400 mu s. The method disclosed by the invention has the advantages of high sensitivity and detection capability, good reproducibility, high recovery rate, and capability of meeting the requirements of residue analysis.
Owner:TOBACCO RES INST CHIN AGRI SCI ACAD +1

Method for detecting regulating-agent thidiazuron residues and regulating-agent diuron residues

The invention discloses a method for detecting regulating-agent thidiazuron residues and regulating-agent diuron residues. The method is characterized by including the following steps that after a C18 column is pre-rinsed through 5 ml of ethyl acetate, sample residues obtained through filtering carried out after ultrasonic extraction are dissolved through 5 ml of ethyl acetate; the mixture is transferred to the column and eluted through 10 ml of ethyl acetate, and eluent is collected, arranged on an electric heating plate and blown through nitrogen at the temperature of 35 DEG C to be approximately dry; the volume of the obtained product is accurately fixed to 2 mL through methyl alcohol, and the mixture is filtered into a 2-mL small sample injection bottle through a 0.22-micron needle hole filtering film; the obtained sample flows through a chromatographic column at the flowing speed of 1.0 mL / min, and detection is carried out through a liquid chromatograph and a PDA detector. According to the method, 50 mL of acetonitrile serves as extracting liquid; compared with the reported mode that acetone serves as extracting liquid, the use amount is small, and later-period purification is simple; compared with the mode that methyl alcohol serves as extracting liquid, after extracting and salting-out are carried out, the mixture is distilled to be dry through the heating plate, rotary steaming is avoided, and working efficiency can be improved.
Owner:河南省农业科学院农业质量标准与检测技术研究所

Analyzing method for simultaneously determining residues of organophosphorus pesticides and pyrethriods pesticides in soil

The invention provides an analyzing method for simultaneously determining residues of organophosphorus pesticides and pyrethriods pesticides in soil. The analyzing method is characterized by comprising the following steps: carrying out ultrasonic extraction on a soil test sample by using an acetonitrile solution containing 1% of acetic acid by volume percent; purifying by using a suitable amount of PSA and C18 mixed fillers; blowing liquid supernatant by nitrogen and concentrating until the liquid supernatant is nearly dried; respectively dissolving by acetone and n-hexane and enabling the volume to be constant; raising the temperature by using DB-1701 and HP-5 quartz capillary columns and separating; carrying out GC / FPD (Gas Chromatograph / Flame Photometric Detector) detection and GC / micro ECD (Electron Capture Detector) detection; and finally, quantifying by using a base material external standard method. A test confirms that the method has a wide linear range; the technical indexes including detection sensitivity, accuracy and precision meet the requirements of a residue analysis; the pre-treatment operation is simple, convenient and rapid and a reliable manner is provided for analytical researches for simultaneously determining the residues of ths pesticides and the pyrethriods pesticides in the soil.e organophosphoru.
Owner:江苏太湖地区农业科学研究所

Method for detecting succinylcholine chloride in food and metabolite of food

The invention discloses a method for detecting succinylcholine chloride and metabolite in food. A precise qualitative and quantitative method for determination of the succinylcholine chloride in animal-derived food and the metabolite succinylcholine chloride of the animal-derived food is established by reverse phase solid phase extraction-ultra high performance liquid chromatography-mass spectrometry / mass spectrometry technology. The established method provides a scientific basis for emergency treatment of food safety public health emergencies.
Owner:刘思洁

Quantitative detection method for organophosphorus pesticide in soil

The invention discloses a quantitative detection method for an organophosphorus pesticide in soil. The method is characterized by comprising the following steps: carrying out ultrasonic extraction on a soil sample by using an acetonitrile solution of which the volume fraction is 1%; purifying by using proper mixed filler of PSA and C18; carrying out nitrogen blowing and concentrating on supernate until nearly dry; respectively dissolving and making to constant volume by using normal hexane; heating up and separating by using DB-1701 quartz capillary column program; carrying out GC / FPD detection; finally quantifying by using a matrix external standard method. A test proves that the method is wide in linear range, the technical indicators such as the detection sensitivity, the accuracy and the precision meet the requirements of residue analysis, the quantitative detection method is simple in pre-treatment operation, convenient and fast, and reliable means is provided for analysis and research of organophosphorus pesticide residue in the soil.
Owner:江苏太湖地区农业科学研究所

A method for the determination of seven degradation products of indoxacarb in tea and tea soup based on ultra-high performance liquid chromatography-tandem mass spectrometry

The invention discloses a method for determining seven indoxacarb degradation products in tea leaves and tea soup based on ultra-high performance liquid chromatography tandem mass spectrometry, and belongs to the technical field of tea pesticide residue detection. The present invention includes: 1) sample extraction and purification: for fresh leaves or tea samples, acetonitrile / water extraction, C 18 Purification with GCB dispersive solid phase extraction, concentrated methanol / water to volume; or 1) PRP-SPE column enrichment and purification for tea soup samples, methanol elution and reception, concentrated methanol / water to volume; 2) C-Use 2. Chromatographic column separation and ultra-high performance liquid chromatography tandem mass spectrometry to detect 7 indoxacarb degradation products; 3) Calculate the standard curve and linear correlation coefficient of indoxacarb degradation products; 4) Calculate the addition recovery, relative standard deviation, and method detection limits and limits of quantitation. The method of the invention satisfies the requirements of residue analysis, and can provide an analysis method for the research and detection of seven indoxacarb degradation products in fresh tea leaves, tea leaves and tea soup.
Owner:TEA RES INST CHINESE ACAD OF AGRI SCI

A method for detecting the residual amount of flufenamide in wheat

The invention discloses a detection method for a residual amount of cyflufenamid in wheat. The method comprises the following steps: 1, preparing a standard solution; 2, drawing a standard curve; 3, extracting a sample; 4, purifying the sample; 5, detecting the sample; and 6, calculating a result. According to the detection method, acetonitrile is used as an extraction liquid, compared with the acetone serving as the extraction liquid, less liquid is used, and the later purification is relatively simple; compared with the methanol serving as the extraction liquid, after the extraction and salt precipitation, a heating plate is dried in a steaming manner, and no rotary evaporation is needed, so that the working efficiency is improved; the popularization of the instrument for detection is relatively high, and the method is easy to popularize and use; the reproducibility, the accuracy, the precision and the detection limit of the detection method of the invention can meet the requirements on the analysis of residues of pesticide in the wheat; and by adopting the detection method, the environmental pollution is reduced, the detection cost is reduced, the working efficiency is improved, the practicability is high, and the popularization and application value is high.
Owner:河南省联检药物分析有限公司

A quantitative detection method for organophosphorus pesticides in fresh tea leaves

The invention provides a quantitative determination method for organophosphorus pesticides in fresh tea leaves. The quantitative determination method is characterized by comprising the following steps: carrying out ultrasonic extraction on fresh tea leaf test samples by using an acetonitrile solution containing 1% of acetic acid by volume percent; purifying by using a suitable amount of PSA (Primary Secondary Amine), C18 and GCB (Graphitized Carbon Black) mixed fillers; blowing liquid supernatant by nitrogen and concentrating until the liquid supernatant is nearly dried; dissolving by acetone and enabling the volume to be constant; raising the temperature by using a DB-1701 quartz capillary column and separating; carrying out GC / FPD (Gas Chromatograph / Flame Photometric Detector) detection; and finally, quantifying by using a base material external standard method. A test confirms that the method has a wide linear range; the technical indexes including detection sensitivity, accuracy and precision meet the requirements of a residue analysis; the pre-treatment operation is simple, convenient and rapid and a reliable manner is provided for analytical researches for determining the organophosphorus pesticides in fresh tea leaves.
Owner:江苏太湖地区农业科学研究所

Method for determining diuron residues in sugarcane based on 3,4-dichloroaniline

The invention discloses a method for determining diuron residues in sugarcane based on 3,4-dichloroaniline. The method comprises the following steps: S1) employing a gas chromatography-mass spectrometry to determine an indication component 3,4-dichloroaniline for diuron thermal decomposition; S2) sample pre-processing: extracting a sugarcane sample and purifying the sugarcane sample to obtain sugarcane to-be-detected liquid; and S3) preparing at least 6 diuron standard solutions with different concentrations, performing gas chromatography-electron capture detector determination on the diuron standard solutions with concentration gradients, drafting a standard work curve, and determining the content of diuron in the sugarcane to-be-detected liquid. According to the method, diuron has good linear relation in a scope of 0.01-5.0 mg / L, the correlation coefficient is greater than 0.998, the detection limit is 0.007 mg / kg, the recovery rate of diuron in the sugarcane juice is 89.2%-111%, andthe relative standard deviation is 2.45-6.57%. The accuracy and precision of the method can satisfy the residual analysis requirement of pesticide.
Owner:GUANGXI NORMAL UNIV OF SCI & TECH

A quantum dot-labeled antibody probe test strip and its preparation method and application

The invention belongs to the field of chemical detection, relates to a visualized and rapid detection method for detecting residual amount of benzothiostrobin in strawberries, and relates to pesticideresidue detection, in particular to a quantum dot-labeled antibody probe test strip as well as a preparation method and application thereof. The quantum dot-labeled antibody probe test strip comprises a bottom plate, a nitrocellulose membrane, a sample pad, a bonding pad and an absorption pad, wherein the nitrocellulose membrane is located on the bottom plate; the sample pad and the bonding pad are sequentially arranged on the bottom plate on the left side of the nitrocellulose membrane, and the absorption pad is arranged on the bottom plate on the right side of the nitrocellulose membrane; quantum dot-labeled antibody probes are distributed on the bonding pad; and benzothiostrobin antigens and goat-anti-mouse antibodies are further distributed on the nitrocellulose membrane. The invention provides the visualized and rapid detection test strip which is suitable for quantitatively detecting the residual amount of the benzothiostrobin in strawberries.
Owner:河南省农业科学院农业质量标准与检测技术研究所

Method for Determination of Diuron Residues in Sugarcane Based on 3,4-Dichloroaniline

The invention discloses a method for determining diuron residues in sugarcane based on 3,4-dichloroaniline, comprising the following steps: S1. Using gas chromatography-mass spectrometry to determine the indicator component 3,4-diuron thermal decomposition Dichloroaniline; S2. Sample pretreatment: extract and purify the sugarcane sample to obtain the sugarcane solution to be tested; S3. prepare diuron standard solutions with at least 6 concentrations; prepare diuron standards for each concentration gradient The solution was determined by gas chromatography-electron capture detector, and a standard working curve was drawn; the content of diuron in the sugarcane test solution was determined. Using the method of the present invention, Diuron has a good linear relationship in the range of 0.01-5.0 mg / L, the correlation coefficients are all greater than 0.998, the detection limit is 0.007 mg / kg, and the recovery rate of Diuron in sugarcane juice is 89.2%. ‑111%, and the relative standard deviation is 2.45%‑6.57%. The accuracy and precision of this method can meet the requirements of pesticide residue analysis.
Owner:GUANGXI NORMAL UNIV OF SCI & TECH

Method for analyzing and determining spirodiclofen residues in tea leaves and tea soup

The invention discloses a method for analyzing and determining spirodiclofen residues in tea leaves and tea soup, and belongs to the technical field of tea leaf acaricide residue detection. The method comprises the following steps: 1) preparing a fresh tea leaf and green tea / black tea sample: soaking in 1% formic acid water, adding 1-5% formic acid acetonitrile or acetic acid acetonitrile for extraction, adding NaCl, centrifuging, taking out supernate, adding 1-5% formic acid acetonitrile or acetic acid acetonitrile into residues, repeatedly extracting, mixing the supernates, concentrating to be dry, re-dissolving with formic acid acetonitrile, transferring into a centrifuge tube filled with C18, GCB and MgSO4, purifying and centrifuging, separating the supernate, concentrating to be dry, and performing constant volume with acetonitrile; 2) preparing a tea soup sample: adding 1-5% formic acid acetonitrile or acetic acid acetonitrile into the tea soup, uniformly mixing, adding NaCl, centrifuging, taking out supernate, repeatedly extracting a lower layer, mixing the supernates, concentrating to be dry, and using acetonitrile for fixing the volume; and 3) detecting through an ultra-high performance liquid chromatography-mass spectrometry matrix external standard method. The method meets the residue analysis requirement and can meet the requirement for detection of spirodiclofen residues in the tea leaves and the tea soup.
Owner:TEA RES INST CHINESE ACAD OF AGRI SCI

Method for determining residual quantity of chlorpromazine in honey

The invention relates to the field of methods for detecting residual drugs in food, in particular to a method for determining the residual quantity of chlorpromazine in honey. The method comprises the following steps: (1) preparing a sample, (2) extracting a sample, (3) purifying the sample, (4) preparing a sample blank extracting solution of a chlorpromazine standard working solution, (6) carrying out liquid chromatography-tandem mass spectrometry measurement, (7) drawing a standard working curve, and (8) measuring the residual quantity of a measured substance in a pure sample product. The method provided by the invention is high in accuracy and good in precision, can meet the requirement of chlorpromazine residue analysis, and provides a powerful tool for detecting chlorpromazine in animal-derived food.
Owner:上海冠生园蜂制品有限公司 +1

Quantitative detection method for pyrethriods pesticides in fresh tea

The invention discloses a quantitative detection method for pyrethriods pesticides in fresh tea. The quantitative detection method is characterized by comprising the following steps: ultrasonically extracting a fresh tea sample by an acetonitrile solution containing 1% of acetic acid in percentage by volume, then purifying by using an appropriate amount of mixed filler of PSA (Prostate Specific Antigen), C18 and GCB, carrying out nitrogen blowing to concentrate liquid supernatant to be nearly dry, dissolving with normal hexane and making up to volume, increasing programmed temperature and separating by using an HP-5 quartz capillary column, carrying out GC / muECD, and finally quantifying by using a matrix external standard method. Through confirmation by test, the method is wide in linear range; the technical indexes such as detection sensitivity, accuracy and precision meet the requirements of analysis of residues; the pretreatment operation is simple, convenient and quick; through the method, a reliable manner is provided for analysis and research for detecting the residues of the pyrethriods pesticides in the fresh tea.
Owner:江苏太湖地区农业科学研究所

An analytical method applied to the determination of sulfonylurea herbicide residues in plants

The invention discloses an analysis method applied to measuring residual quantity of sulfonylurea herbicide in plants. The method comprises the first step of preparing a stock solution, the second step of preparing extraction head through a QuEChERS method, the third step of processing samples and the fourth step of setting detection conditions of UPLC-MS / MS and conducting sample introduction. The method has the advantages that pretreatment is conducted through an extraction device, the sample purifying process is simple and quick, samples can be obtained through simple absorbing-pushing, results are accurate, and detection is quick; secondly, a sieve in the extraction head allows dispersion extraction, adsorbent, salt and other particulate matter can be removed out of the solution, the number of impurities is reduced, and convenience is brought to accurate quantitation; quantitation is accurate, sensitivity is high, operation is easy and quick, the consumption of the solvent is small, and the requirement for pesticide residue analysis can be met; the improved QuEChERS-method device is used for measuring the residue quantity of 10 kinds of sulfonylurea herbicide in plants.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA

Quantitative detection method of pyrethroid pesticides in a kind of soil

The invention discloses a quantitative detection method for pyrethriods pesticide in soil. The method is characterized by comprising the following steps: carrying out ultrasonic extraction on a soil sample by using an acetonitrile solution of which the volume fraction is 1%, purifying by using proper mixed filler of PSA and C18; carrying out nitrogen blowing and concentrating on supernate until nearly dry; dissolving and metering volume by using normal hexane; heating up and separating by using HP-5 quartz capillary column program; carrying out GC / muECD detection; finally quantifying by using a matrix external standard method. A test proves that the method is wide in linear range, the technical indicators such as the detection sensitivity, the accuracy and the precision meet the requirements of residue analysis, the quantitative detection method is simple in pre-treatment operation, convenient and fast, and reliable means is provided for analysis and research of pyrethriods pesticide residue in the soil.
Owner:江苏太湖地区农业科学研究所

Method for determining residual sedative type veterinary medicaments in mutton

The invention relates to a method for determining residual medicaments in mutton, and in particular relates to a method for determining multiple sedative type medicaments in mutton at the same time. The residual sedative type veterinary medicaments refer to zolpidem, haloperidol, chlordiazepoxide, promethazine, nitrazepam, chlorpromazine hydrochloride, perphenazine, fluphenazine hydrochloride, clonazepam, xylazine hydrochloride, propionylpromazine, carazolol, acepromazine, droperidol and azaperone. The method has the advantage that the residual amounts of 15 types of sedative type medicaments in mutton are determined through high-resolution liquid chromatography-tandem mass spectrometry. The method is high in sensitivity and high in recovery rate, and can meet the detection requirements on veterinary medicaments.
Owner:GANSU AGRI UNIV

Detection method for residual amount of cyflufenamid in wheat

The invention discloses a detection method for a residual amount of cyflufenamid in wheat. The method comprises the following steps: 1, preparing a standard solution; 2, drawing a standard curve; 3, extracting a sample; 4, purifying the sample; 5, detecting the sample; and 6, calculating a result. According to the detection method, acetonitrile is used as an extraction liquid, compared with the acetone serving as the extraction liquid, less liquid is used, and the later purification is relatively simple; compared with the methanol serving as the extraction liquid, after the extraction and salt precipitation, a heating plate is dried in a steaming manner, and no rotary evaporation is needed, so that the working efficiency is improved; the popularization of the instrument for detection is relatively high, and the method is easy to popularize and use; the reproducibility, the accuracy, the precision and the detection limit of the detection method of the invention can meet the requirements on the analysis of residues of pesticide in the wheat; and by adopting the detection method, the environmental pollution is reduced, the detection cost is reduced, the working efficiency is improved, the practicability is high, and the popularization and application value is high.
Owner:河南省联检药物分析有限公司
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