A method for rapid detection of dirasin or dirasin in beverages

A technology of diphatic sodium salt and beverage, which is applied in the detection field of diphatic sodium and diphatic sodium salt, can solve the problems that cannot be directly analyzed and detected, and achieve the effects of fast measurement speed, high cost performance and low operating cost

Inactive Publication Date: 2011-12-28
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At present, the detection methods of dimethicin and dimethicin sodium salt poisons use high performance liquid chromatography, gas chromatography and g

Method used

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  • A method for rapid detection of dirasin or dirasin in beverages
  • A method for rapid detection of dirasin or dirasin in beverages
  • A method for rapid detection of dirasin or dirasin in beverages

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Experimental program
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Effect test

Embodiment 1

[0031] The process of using ion mobility spectrometer to detect dimorph and dimorph sodium salt methanol solution is as follows: extract 1-50 μL of sample solution and drop it on the sampling sheet, evaporate the methanol (heater 80°C), and then insert it into the injection port of the instrument. The sample is rapidly vaporized by a built-in thermal desorption device, and the temperature of the thermal desorption device is about 180℃; the sample gas obtained by thermal desorption is brought into the ionization region of the ion mobility spectrum by the carrier gas, and the flow rate of the carrier gas is about 300sccm; The region is ionized into positive and negative ions, which enter the drift region composed of a uniform electric field through the periodically opened ion gate, and are separated and detected in the drift region.

[0032]Figure 2 shows the ion mobility spectrogram of detecting dimorph and dimorph sodium by negative ion mode ion mobility spectrometer. It can be...

Embodiment 2

[0035] The process of using ion mobility spectrometer to detect sodium adipate in beverages is as follows: 1-50 μL of sample solution is drawn and dropped on a clean sampling sheet, and then inserted into the injection port of the instrument. The sample is rapidly vaporized by a built-in thermal desorption device, and the temperature of the thermal desorption device is about 180℃; the sample gas obtained by thermal desorption is brought into the ionization region of the ion mobility spectrum by the carrier gas, and the flow rate of the carrier gas is about 300sccm; The ionized region is ionized into positive and negative ions, which enter the drift region composed of a uniform electric field through the periodically opened ion gate, and are separated and detected in the drift region. Different compounds have different mobility constants, move at different speeds in the drift region, and arrive at the detector at different times. By measuring the time at which the ions arrive a...

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Abstract

The invention discloses a fast and sensitive method for detecting trace amounts of dimethicone and dimethicin sodium salt. The ion mobility spectrometry technology is used as the basic detection technology, and a poison detector is used as a detection means to study the simultaneous detection of dimethicin and dimethicin in positive and negative ion modes. Dimethine salt sample. At the same time, without any complicated sample pretreatment, it can directly detect the diquat sodium salt in coffee, cola, apple juice and other beverages. The measurement method is simple, fast and reliable. The measurement time is only 0.5min, and the detection limit can reach 50ppb respectively. The minimum detectable amount of diphamate sodium in different beverages is about 1ng, and adult oral administration of 0.06-0.25g of diphacin sodium can cause poisoning, and this amount can be accurately detected by ion mobility spectrometry poison detector. Based on the application research requirements of forensic science, the software-controlled instrument can implement an alarm mode according to the strength of the poison detection signal.

Description

technical field [0001] The invention relates to a method for detecting dimorph and its sodium salt, in particular to a new method for detecting dimorph and its sodium salt which is fast, sensitive and does not require any pretreatment. The method is based on ion mobility spectrometry and uses a rapid poison detector as an analytical method, and the detection limit can reach 50ppb. The analysis speed of this method is fast and only takes 0.5 min. The test operation is simple, no need for any sample pretreatment experiments, and no need for special professional background personnel to operate. Background technique [0002] Anti-mouse molecular formula: C 23 H 16 O 3 ; Molecular mass: 340.36; Chinese name: 2-(2,2-diphenylacetyl)-1,3-indandione; English name: diphacinone; 2-diphenyl acetyl-1,3-indandione; Description of properties : Light yellow powder, odorless and tasteless, soluble in alcohol, acetone and boiling water, insoluble in benzene and toluene, non-corrosive, go...

Claims

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Application Information

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IPC IPC(8): G01N27/62G01N27/622G01N27/626
Inventor 李海洋王新仓怀文鞠帮玉王卫国
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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