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Method for detecting carbamate pesticide content in total particle matter in cigarette mainstream smoke

A technology of carbamates and cigarette mainstream smoke, which is applied in the field of tobacco chemical analysis, can solve the problems of undiscovered public reports, etc., and achieve the effect of simple measurement method, saving time and simplifying operation steps

Inactive Publication Date: 2012-06-27
YUNNAN RES INST OF TOBACCO SCI
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  • Abstract
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Problems solved by technology

Through document search, do not find the public report of the same document as the content of the present invention

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  • Method for detecting carbamate pesticide content in total particle matter in cigarette mainstream smoke
  • Method for detecting carbamate pesticide content in total particle matter in cigarette mainstream smoke
  • Method for detecting carbamate pesticide content in total particle matter in cigarette mainstream smoke

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Embodiment Construction

[0019] The present invention will be described in detail below.

[0020] 1. Experimental part

[0021] 1. Instruments and reagents

[0022] Gas chromatography mass spectrometry (PerkinElmer clarus 500 GC / MS, USA), ultrasonic cleaner (SK5200H, China), electronic balance (XS204, Switzerland), rotary evaporator (BUCHIR-215, Switzerland); SPEM extraction device (TALBOY7 ×7CERHOT / STIR, USA); constant temperature and humidity box (KBF-240, Germany); vortex mixer (HYQ-2110, China).

[0023] Acetone, toluene (analytical grade, Xilong Chemical Co., Ltd., redistilled); acetonitrile, n-hexane, dichloromethane (chromatographic grade, American DIMA Company); sodium chloride, anhydrous sodium sulfate (analytical grade, Shantou West Long Chemical Co., Ltd., dried at 450°C for 4 hours before use, and placed in a desiccator after cooling for use); carbofuran and carnavir (purity of 99%, both purchased from Dr. Ehrenstorfer Company in Germany); pirimicarb, Jiuxiaowei (99% purity, all purchas...

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Abstract

The invention discloses a method for detecting carbamate pesticide content in total particle matter in cigarette mainstream smoke, belonging to the technical field of tobacco chemical analysis. The method comprises the steps of putting a Cambridge filter with trapped total particle matter in cigarette mainstream smoke into a conical flask with a plug; adding 100ml of mixed solvent of ethyl acetate and cyclohexane according to the volume ratio of 85:15; putting the conical flask on an ultrasonic generator to extract for 30min; concentrating the extracted liquid to 0.5ml after drying; using the mixed solution of toluene and acetonitrile (1:3) to reach a volume of 2ml to be purified; putting Envi-carb / NH2SPE small column on a solid phase extracting device, adding 2g of anhydrous sodium sulfate to the Envi-carb / NH2 composite column; using 5ml of mixed solution of toluene and acetonitrile according to the volume ratio of 3:1 to perform activation; transferring the to-be-purified sample test liquid to the composite column, using 5ml of mixed solvent of acetonitrile and toluene according to the volume ratio of 3:1 to perform elution for three times, wherein the rate is not more than 5.0ml / min; concentrating the eluate to 0.5ml, using 5ml of dichloromethane to exchange solvents for two times, concentrating the exchanged test liquid to 1ml, and then performing analysis. The invention has the advantages of simple and convenient method and accurate detected data of pesticide content.

Description

Technical field: [0001] The invention relates to a method for detecting the content of carbamate pesticides in the total particulate matter of cigarette mainstream smoke, belonging to the technical field of tobacco chemical analysis. Background technique: [0002] Tobacco is an important economic crop in my country, and pests and diseases are important factors affecting the quality of tobacco in my country. Chemical control is one of the main measures used in production for the control of diseases and insect pests. However, the extensive, large-scale and long-term use of chemical pesticides has caused the increase of pesticide residues in tobacco leaves, the enhancement of the resistance of diseases and insect pests, and the problem of re-emergence. Among them, the problem of pesticide residues in tobacco leaves has increasingly attracted the attention of the tobacco industry and the whole society. Carbamate pesticides (NMCs) are a class of pesticides that appeared after or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/12
Inventor 黄海涛耿永勤夭建华缪恩铭李雪梅吴娜周岚唐萍
Owner YUNNAN RES INST OF TOBACCO SCI
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