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Method for rapidly determining different producing area semen trichosanthis pesticide residue

A rapid determination of pesticide residue technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of unfixed pesticide residue standards, achieve the effect of improving accuracy and convenience, and improving quality and safety

Inactive Publication Date: 2012-05-30
湖州市食品药品检验所
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Problems solved by technology

The Huzhou area of ​​Zhejiang Province is one of the main production areas of Trichosanthes chinensis, but currently there is no legal standard for pesticide residues of Trichosanthes chinensis as a medicinal material

Method used

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  • Method for rapidly determining different producing area semen trichosanthis pesticide residue
  • Method for rapidly determining different producing area semen trichosanthis pesticide residue
  • Method for rapidly determining different producing area semen trichosanthis pesticide residue

Examples

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Embodiment 1

[0035] Chromatographic conditions: Agilent 7890A gas chromatograph, equipped with 63Ni-ECD detector, quartz capillary column; inlet temperature: 280°C; detector temperature: 300°C; carrier gas: high-purity nitrogen; flow rate 3ml / min, splitless Injection. Using temperature program: initial temperature 150°C, keep 2min; 4°C / min rise to 180°C, keep 10min; 10°C / min rise to 250°C, keep 5min; injection volume: 1.0μl.

[0036]

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Abstract

The invention relates to a method for rapidly determining pesticide residue, more specifically relates to a method for rapidly determining different producing area semen trichosanthis pesticide residue. The rapid determination method is characterized in that a GC-ECD method is used for rapidly determining the semen trichosanthis organic chlorine pesticide residue. The rapid determination method comprises the following steps: A) preparing and mixing a concentrated liquid of a contrast, B) pretreating a semen trichosanthis sample, C) determining a standard curve and the lowest detection limit, D) carrying out chromatography, E) carrying out quantitative determination by an external standard method and calculating the organic chlorine pesticide residue in the semen trichosanthis. According to plantation condition of different producing area semen trichosanthis medicinal materials, the generation condition of pests and the usage condition of the pesticide, the method of the invention is capable of establishing the rapid detection method of six organic chlorine pesticide residues in semen trichosanthis by the GC-ECD method, raising the accuracy and convenience of pretreatment of the traditional Chinese medicinal material samples, and providing the reliable basis for regulating the detection method of the semen trichosanthis medicinal material pesticide residue, raising the quality safety of the semen trichosanthis medicinal material and controlling the pesticide residue.

Description

technical field [0001] The invention relates to a rapid determination method for pesticide residues, in particular to a rapid determination method for the pesticide residues in Trichosanthes chinensis from different producing areas. Background technique [0002] In recent years, the problem of pesticide residues in traditional Chinese medicine has attracted more and more attention from governments around the world, and incidents of traditional Chinese medicine being banned abroad due to excessive heavy metals and pesticide residues have occurred frequently. According to the test results of 850 samples of 72 kinds of Chinese medicinal materials in the national "Ninth Five-Year Plan" research project "Standardization of Quality Standards for Chinese Medicinal Materials", the detection rate of BHC and DDT in traditional Chinese medicine is nearly 100%. Some cultivated root medicinal materials are even more seriously polluted, and banned pesticides have also been found in some f...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/70
Inventor 陈晓平王新财彭晓国钱亚芳陈飞龙
Owner 湖州市食品药品检验所
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