31results about How to "Meet quantitative requirements" patented technology

The invention discloses a method for determining nitrate and nitrite ions in cigarette tipping paper. The method consists of: cutting a tipping paper sample and weighing it, dipping sample fragments in deionized water, conducting water bath extraction, then carrying out static cooling to room temperature; taking the supernatant, and passing it through a water-based filter membrane syringe needle filter and a C18 column, thus obtaining a sample solution; weighing a nitrate ion standard solution and a nitrite ion standard solution, adding deionized water to a constant volume, and then implementing dilution with deionized water so as to obtain standard working solutions; then implementing ion chromatograph (IC) analysis on the standard working solutions and the sample solution to measure the peak areas of nitrate and nitrite ions in the sample, and substituting the peak areas into standard curves so as to calculate the content of nitrate and nitrite ions in the sample. The quality can be determined by standard substance retention time, and the quantity can be determined by the peak areas. The method can accurately determine the content of nitrate and nitrite ions in a cigarette tipping paper sample, has the advantages of rapidity, reliability, simplicity and practicability, and fills in the blank of determination of nitrate and nitrite ions in cigarette tipping paper at present.

The invention relates to a method of detecting ammonia cigarette filters intercepted by using ion chromatography conductivity device. The steps of the method: taking down the filter after the cigarette is burned off, shearing the filter into shivers vertically by scissors, putting the shivers into a receiving flask; adding 25-35mmol/L sulphuric acid solution into the receiving flask, plugging the tampon, filtering after vibration; analysising the filtrate by IC chromatograph, adopting CS12A cation exchange column; adopting the flow rate of elutriant 0.20-0.28mL/min, making the elutriant up of deionzied water and 35-45 mmol/L sulphuric acid solution, eluting by the gradient elutriant ; applying the temperature of 28-32 DEG C for the column and the detection cell. Sample size: 10-25 MuL, current flow: 15-32mA. The determination is made by retention time of standard substance while quantitation by peak area. The invention has the advantages of accurately and effectively detecting ammonia cigarette filters intercepted rapidly and reliability, convenient and easy handling. By adopting the gradient elute, the interference of various ions can be eliminated especially sodium ion; the invention solves the problem of rapid detection of ammonia cigarette filters intercepted and fills in the technology blank of detecting ammonia cigarette filters intercepted.

The invention discloses an automatic quality detection cloud platform. The cloud platform receives a product image. The product image is sent to a plurality of terminals. The cloud platform and the multiple terminals judge the product quality. The cloud platform synthesizes all judgment results, and finally whether the product quality is qualified or not is determined. According to the automatic quality detection cloud platform, the cloud computing and product quality detection are combined, the automatic degree of the product quality detection is improved, the detection cost is lowered, and the detection field is enlarged.

The invention relates to an ion chromatographic measurement method for the ammonia content in flue gas of an electronic cigarette. The method is used for measuring the ammonia content in the flue gas of the electronic cigarette. The method comprises the following steps: (1) preparing a sample solution to be measured; (2) preparing a standard working solution; (3) performing ion chromatographic analysis; (4) drawing a standard curve, and calculating a result; (5) calculating the ammonia content of the flue gas of the electronic cigarette according to a formula. According to the method, an analysis method for measuring the ammonia content of the flue gas of the electronic cigarette is established for the first time, is rapidly operated, and is simple and easy, a method for rapidly measuring the ammonia content of the flue gas of the electronic cigarette is established, and a blank in a method for measuring ammonia in the flue gas of the electronic cigarette is filled.

The present invention discloses a method for simultaneously measuring acetic acid vinyl ester and 6 benzene series substances in water-based adhesive. The method comprises: dispersing samples by using N-N dimethylformamide, quantifying by using double internal standard methods and simultaneously measuring 7 compounds in cigarette water-based adhesive by using a headspace-gas chromatography-mass spectrometer during one sample injection; under adopted chromatographic conditions, chromatographic peaks of benzene, toluene, ethylbenzene, orthoxylen, m-xylene/p-xylene (m-xylene and p-xylene are not separated due to problems of a chromatographic column, but the calculation results are not influenced), and acetic acid vinyl ester target substance as well as two internal standard substances, namely isobutanol and 2-hexanone, are separated well. Results show that the regression equation correlation coefficient of each component reaches 0.999 or more, the quantitative determination limit of the benzene series substances is 0.01-0.02mg/kg, the quantitative determination limit of acetic acid vinyl ester is 0.10mg/kg, the mean relative standard deviation is 1.15%-3.75%, the adding standard recovery is 88.09%-95.44%; the method is fast, accurate, good in repeatability, high in recovery rate, good in practicability, and the like.

The invention discloses a method for simultaneous detection of 13 benzene compounds and phthalic acid ester compounds in a water-borne adhesive. The method comprises the steps of oscillating to disperse samples by adopting ultrapure water, then extracting through cyclohexane and filtering to obtain a sample solution, and simultaneously detecting 13 compounds in the water-based adhesive for cigarettes in one-time sample feeding by utilizing a gas chromatograph-mass spectrometer. The chromatographic peak has good separation effect, and the result shows that the correlation coefficients of the regression equation of components all reach 0.997 or above, the quantitative detection limits of six benzene compounds are 0.04-0.07 microg/g, and the quantitative detection limits of seven phthalic acid ester compounds are 0.5-4.2 microg/g. The method has the advantages of accuracy, rapidness, high sensitivity, good repeatability, high recovery rate and the like, and conforms to the quantitative requirement.

The invention discloses a wear test device of an excavator bucket, belongs to the field of mechanical manufacture, and is suitable for a wear test of the excavator bucket 5. The bucket 5 comprises a front hinge point hole and a rear hinge point hole. The wear test device of the excavator bucket comprises a test bracket 1, a driving mechanism, a material tank 2 and a material. The front hinge point hole of the bucket 5 is hinged with the test bracket 1, and the rear hinge point hole of the bucket 5 is connected with the driving mechanism. The driving mechanism drives the bucket 5 to rotate around the front hinge point hole, so as to simulate a digging process of the bucket 5. The material tank 2 is arranged below the bucket 5, and the material is placed in the material tank 2 and located in a bucket 5 rotating region, namely a digging region. The wear test device takes the friction and wear life of the bucket as a main test purpose, also gives consideration on the structure fatigue life, performs a bench test, can accurately collect bucket wear information, facilitates analysis and improvement, and besides, also greatly saves the time and cost required by whole-machine tests and customer tests.

The invention discloses a robot remote control method based on a cloud platform. An intelligent detecting cloud platform is used for detecting a product captured by an image of a detecting robot; every kind of products has corresponding intelligent detecting cloud platforms; according to the detected results, the intelligent detecting cloud platform notices the detecting robot to grip unqualified products. The robot remote control method uses the cloud platform to remotely identify product quality and controls the detecting robot to grip the unqualified products, so that the product quality detecting efficiency and the automatic capacity are improved.

The invention relates to a method for detecting ethyl 5-isoquinoline sulfonate in fasudil hydrochloride. The method comprises the following steps: 1) preparing a test solution; 2) preparing a reference substance solution; and 3) carrying out headspace gas chromatography-mass spectrometry determination: carrying out headspace-gas chromatography-mass spectrometry determination on a series of reference substance solutions with different concentrations, which are prepared in the step 2) and contain the internal standard solution and the derivative solution, measuring and recording the quantitative ion peak areas of iodoethane and butyl iodide, drawing a standard curve and calculating to obtain a linear equation by adopting an internal standard method and taking the ratio of the quantitative ion peak areas of iodoethane and butyl iodide as a vertical coordinate and the ratio of the concentrations of iodoethane and butyl iodide as a horizontal coordinate, carrying out headspace-gas chromatography-mass spectrometry on the test solution, recording the quantitative ion peak areas of iodoethane and butyl iodide, and substituting the quantitative ion peak areas into a linear equation to calculate the content of ethyl 5-isoquinoline sulfonate in the test solution. The method is good in stability and high in accuracy, and the detection sensitivity can reach 0.03 [mu]g/mL.

The invention relates to a high performance liquid chromatography-tandem mass spectrometry detection method for a refreshing and refreshing liquid. The high performance liquid chromatography-tandem mass spectrometry detection method is used for detecting the concentrations of 10 active ingredients, namely puerarin, paeoniflorin, naringin, hesperidin, baicalin, berberine, tenuifolin, baicalein, emodin and chrysophanol, in the refreshing and refreshing liquid. Comprising the following steps: (1) preparing a stock solution: respectively dissolving each effective component in a 100% methanol solution to prepare a standard stock solution; (2) preparing a to-be-detected sample solution; and (3) performing liquid chromatography separation and mass spectrometry on the to-be-detected sample solution obtained in the step (2). The detection method provided by the invention has the advantages of excellent chromatographic peak shape, simple operation, rapid analysis, high specificity and high separation degree, and the channel of each compound only has a unique target peak.

The invention relates to a method for detecting the concentration of six bufadienolide components in a medicinal preparation containing toad skin in blood plasma or tissue. The method comprises the following steps: (1) preparing a stock solution, namely respectively dissolving resibufogenin, bufalin, cinobufagin, cinobufotalin, telocinobufagin and arenobufagin in a (50+/-5)% acetonitrile aqueous solution to prepare a standard stock solution; dissolving reserpine in a (50+/-5)% acetonitrile aqueous solution to prepare a reserpine stock solution; (2) preparing a working solution; (3) preparing ato-be-detected sample solution; (4) carrying out liquid chromatography separation on the to-be-detected sample solution obtained in the step (3); and carrying out mass spectrometric analysis on the sample subjected to liquid chromatography separation. In the detection process of the method, the chromatographic peak shape is excellent, a channel of each compound only has a unique target peak, theinterference of other effects such as solvent effects is avoided, and the method is easy to operate, rapid in analysis, high in specificity and high in separation degree.

The invention provides a method for analyzing a carbaryl pesticide residue in tobacco by using the combination of central cut two-dimensional liquid chromatogram and mass spectrum. The method comprises the steps of performing sample pretreatment on the tobacco to acquire a sample to be tested, and using a central cut two-dimensional liquid chromatogram and mass spectrum combined system to test thecarbaryl pesticide residue in the sample to be tested. The method for analyzing the carbaryl pesticide residue in the tobacco by using the combination of the central cut two-dimensional liquid chromatogram and mass spectrum provided by the invention, the pretreatment step is simple, the interference substances in the sample are effectively removed, the ion source pollution is reduced, the pesticide residue detection limit is improved, and thus the method is particularly suitable for improving the test repeatability and accuracy of the carbaryl in many samples.

The invention relates to the technical field of food packaging technologies, and discloses a food quantitative automatic packaging device which comprises a mounting frame, sliding grooves are fixedly connected to the two sides of the top of the mounting frame, driving wheels are slidably connected into the sliding grooves, large gears are rotatably connected to the two sides of a fixing frame, and a fixing column is fixedly connected to the middle of the bottom of the mounting frame. And a food material box is clamped in the middle of the top of the mounting frame. When the food quality reaches the quantitative value set by a customized pressure spring, the customized pressure spring is pressed to move downwards, a driving wheel moves downwards to be meshed with a large gear, a sliding column is driven to move up and down, an angle rod is driven to be combined above a food bag at the top of a conveying belt, and the food bag is sealed through the high temperature of a heating wire; the piston is driven to extrude the air chamber up and down, generated air is sprayed out through the exhaust pipe, sundries, chippings and the like on the conveying belt are cleaned, the accuracy of food quality is guaranteed, errors are reduced as much as possible, and the requirement for food quantification is met.