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Gas-chromatography farming residual analysis protectant and use thereof

A technology of gas chromatography and protective agent, applied in the field of protective agent, can solve the problems of poor ester solubility, etc., achieve the effect of improving peak shape and intensity, good solubility, and reducing detection limit

Inactive Publication Date: 2008-08-20
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a gas chromatographic analysis of pesticide residues that has good solubility in acetone, overcomes the disadvantages of poor ester solubility of other analytical protective agents, improves the peak shape and intensity of the analyte, and is easy to operate Protective agent

Method used

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  • Gas-chromatography farming residual analysis protectant and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Accurately weigh 0.5g of polyethylene glycol and 21.25g of olive oil, mix and dilute to 100mL with acetone, mix well and serve.

Embodiment 2

[0018] Accurately weigh 1.0g of polyethylene glycol and 42.5g of olive oil, mix and dilute to 100mL with acetone, mix well and serve.

Embodiment 3

[0020] Accurately weigh 2.0g of polyethylene glycol and 63.75g of olive oil, mix and dilute to 100mL with acetone, mix well and serve.

[0021] Carry out gas chromatographic analysis of pesticide residues with the analytical protective agent in the present invention

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Abstract

The invention provides a gas chromatography agriculture residue analysis protecting agent, which includes acetone solution containing polyethylene glycol and olive oil, wherein the concentration of polyethylene glycol is 0.5-2.0g / 100mL, the concentration of olive oil is 21.25-63.75g / 100mL. Wherein the concentration of polyethylene glycol is preferably 1.0g / 100mL, the concentration of olive oil is preferably 42.5g / 100mL; the provided gas chromatography agriculture residue analysis protecting agent has simple preparation, and has good solubility in acetone solution which overcomes bad eater solubility of other protecting agents, and avoids to bring water into gas chromatography (GC) system when introducing sample, which makes bad effect for system, especially for chromatography column. At the same time the product can improve the peak form and intensity of the detecting material and reduce detectability well for realizing multi-residue high-sensitivity analysis.

Description

technical field [0001] The invention relates to a chemical reagent for analyzing pesticide residues, in particular to a protective agent used for analyzing pesticide residues by gas chromatography. Background technique [0002] The wide application of pesticides has increased the output of agricultural products, but the impact of its residues on human health has also attracted more and more attention. In the current analysis methods, gas chromatography technology is often used, which has the advantages of rapidity and accuracy. [0003] When using gas chromatography to analyze pesticide residues, adding an analytical protective agent can improve the quantitative accuracy and precision of the analyte, and can improve the peak shape and intensity of the analyte; it can greatly reduce the detection limit and realize multi-residue analysis; the operation is simple, superior to Matrix-matched calibration method; GC system does not require frequent maintenance. [0004] At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/00
Inventor 李礼李翔许秀丽仲维科刘汉霞张垚孙毅之陈彦长
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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