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Method for determining 101 kinds of pesticide residues in tobaccos or tobacco products simultaneously

A technology for pesticide residues and tobacco products, which is applied in the field of pesticide residue analysis and detection, can solve problems such as result distortion, liner contamination, and increased maintenance frequency of instruments, achieving the effects of increasing stability, improving recovery rate, and reducing maintenance frequency

Active Publication Date: 2015-03-25
青岛农特生物科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the QuEChERS method, PSA has a certain ability to remove pigment, but it is relatively weak. There are still a lot of pigment and other impurities in the purified solution, especially for some samples with complex matrices such as tea and tobacco. The purification effect still exists. Due to certain limitations, only GC / MS / MS and LC / MS / MS tandem mass spectrometry with strong anti-interference ability can be used for detection. As the number of injections increases, the pigment will contaminate the liner, chromatographic column and detector, making The late results are distorted, increasing the frequency of instrument maintenance, especially the accuracy of active pesticide detection results is greater

Method used

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  • Method for determining 101 kinds of pesticide residues in tobaccos or tobacco products simultaneously
  • Method for determining 101 kinds of pesticide residues in tobaccos or tobacco products simultaneously
  • Method for determining 101 kinds of pesticide residues in tobaccos or tobacco products simultaneously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1: Detection of 101 kinds of pesticide residues in sample A tobacco powder

[0047] 1. Instruments and reagents:

[0048] Pesticide standard products: Yechansan, heptenylphos, secbutacarb, propoxur, demeton-methyl, methionphos, dibromophos, trifluralin, flurafen, terbufos, dichlorfos , dithionate, propanil, α-HCH, lindane, β-HCH, δ-HCH, op"-DDE, pp"-DDE, op"-DDD, pp"-DDD, op"-DDT, pp"- DDT, pentachloronitrobenzene, heptachlor, aldrin, epoxy heptachlor, cis-chlordane, α-endosulfan, trans-chlordane, Di reagent, endodi reagent, β-endosulfan, sulfur Dansulphate, Dimethoate, Carbofuran, Phosphamide E, Phosphamide Z, Chlorpyrifos Methyl, Vinclozolin, Methyl Parathion, Pithion, Fenitrothion, Malathion, Bromine Phosphate, fenfofos, imophos, acetochlor, alachlor, metolachlor, dimethoxol, fenadil, isopramid, butachlor, butachlor , Napropamide, Bifebfex, Isodoblast, Triadimefon, Triaconazole, Daoblastin, Sclerotin, Penconazole, Toxinfear, Thiabendazole, Fendan, Dichamp,...

Embodiment 2

[0096] Example 2: Detection of 101 kinds of pesticide residues in sample B tobacco powder

[0097] Operate according to the method of Example 1, select another tobacco sample B, and see Table 4 for the content of the target pesticide in the sample.

[0098] Table 4: Detection results of target pesticides in sample B

[0099]

[0100]

[0101]

[0102]

Embodiment 3

[0103] Example 3: Detection of 101 kinds of pesticide residues in sample C tobacco powder

[0104] According to the method of Example 1, another tobacco sample C was selected, and the content of the target pesticide in the sample was measured in Table 5.

[0105] Table 5: Detection results of target pesticides in sample C

[0106]

[0107]

[0108]

[0109]

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PUM

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Abstract

The invention discloses a method for determining 101 kinds of pesticide residues in tobaccos or tobacco products simultaneously. The method is characterized by comprising the following steps: adding anhydrous sodium sulfate, an inner label and acidified acetonitrile into a tobacco sample, carrying out vortex extraction, carrying out centrifugal layering, enabling a certain amount of extraction liquid to pass through a solid-phase extraction column for purification, diluting by using acetonitrile / methylbenzene mixed liquid with the volume ratio being 3 to 1, concentrating the diluting liquid, carrying out solvent exchange by using normal hexane so as to obtain a mixture, enable the mixture to pass through an organic-phase filtering membrane, and detecting by using a gas chromatograph-mass spectrometer. The method disclosed by the invention has the advantages that a pretreatment method of a tobacco sample is simplified, the sample analysis time is shorted, simultaneously clean on-machine solution is obtained, and the maintenance frequency and the use cost of instruments are reduced.

Description

technical field [0001] The invention belongs to the technical field of pesticide residue analysis and detection, and relates to a pesticide residue analysis and detection method, in particular to a method for simultaneously measuring 101 kinds of pesticide residues in tobacco or tobacco products. Background technique [0002] With the development of agricultural industrialization, the production of agricultural products is increasingly dependent on chemical and biological products such as pesticides, antibiotics and hormones. The unreasonable use of these substances will inevitably lead to excessive residues in agricultural products, affecting the food safety of consumers, and in severe cases will cause consumers to become ill, develop abnormally, and even directly lead to poisoning death. One of the most effective ways to control the harm of pesticide residues to the human body is to strengthen the supervision of the use of chemical and biological products. To ensure the su...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
Inventor 曹建敏郭承芳于卫松邱军方松鲁世军王允白
Owner 青岛农特生物科技有限责任公司
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