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Screening and quantitative detection method for saflufenacil in plant-derived food

A quantitative detection method and saflufenacil technology, applied in the field of analytical chemistry, can solve the problems of complicated operation and low accuracy, and achieve the effects of sensitive response, high accuracy and little influence of impurities

Pending Publication Date: 2022-05-03
泉州海关综合技术服务中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical defects of the prior art, and provides a screening and quantitative detection method for saflufenacil in plant-derived foods, so as to solve the technical problems of cumbersome operation and low accuracy of conventional detection methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A screening and quantitative detection method for saflufenacil in plant-derived food, comprising the following steps:

[0023] 1) Process the plant-derived food to be tested into a homogenate with a homogenizer, soak and extract several times in ether solution containing 2.2% v / v acetone, and combine the extracts;

[0024] 2) Utilize activated carbon and molecular sieves to process the extract obtained in step 1) sequentially, then add sodium nitrate to mix and then shake, then add anhydrous copper sulfate to it, and fully stir;

[0025] 3) treating the product obtained in step 2) with an octadecylsilane-bonded silica gel filler;

[0026] 4) HPLC detection is carried out with the following chromatographic conditions: the chromatographic column is a C8 column, 3.5mm × 270mm; the mobile phase A is petroleum ether; the mobile phase B is methanol; the volume ratio of mobile phase A to mobile phase B is 7: 3; It is a differential refractive index detector; the elution metho...

Embodiment 2

[0028] A screening and quantitative detection method for saflufenacil in plant-derived food, comprising the following steps:

[0029] 1) Process the plant-derived food to be tested into a homogenate with a homogenizer, soak and extract several times in ether solution containing 2.2% v / v acetone, and combine the extracts;

[0030] 2) Utilize activated carbon and molecular sieves to process the extract obtained in step 1) sequentially, then add sodium nitrate to mix and then shake, then add anhydrous copper sulfate to it, and fully stir;

[0031] 3) treating the product obtained in step 2) with an octadecylsilane-bonded silica gel filler;

[0032] 4) HPLC detection is carried out with the following chromatographic conditions: the chromatographic column is a C8 column, 3.5mm × 270mm; the mobile phase A is petroleum ether; the mobile phase B is methanol; the volume ratio of mobile phase A to mobile phase B is 7: 3; It is a differential refractive index detector; the elution metho...

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PUM

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Abstract

The invention provides a method for screening and quantitatively detecting saflufenacil in plant-derived food. According to the technical scheme, detection is carried out based on an HPLC method, a brand-new pretreatment method is adopted on the basis, and chromatographic conditions are improved. Specifically, the method comprises the following steps: firstly, treating a to-be-detected sample by using a homogenizer to fully ensure dissolution of a to-be-detected substance, and strictly controlling the homogenizing temperature in the treatment process to avoid influence on the to-be-detected substance; on the basis, extracting the homogenate by using a mixed solvent, and salting out the obtained extracting solution to remove part of impurities; then, the octadecyl silane bonded silica gel filler is used for adsorption, so that the influence of impurities on subsequent liquid chromatography detection is fully avoided; on the basis, detection is carried out under specific chromatographic conditions, and quantification is carried out by using an external standard method. The detection method disclosed by the invention is simple and convenient to operate, small in impurity influence, sensitive in response and high in accuracy, and has outstanding technical advantages.

Description

technical field [0001] The invention relates to the technical field of analytical chemistry, in particular to a screening and quantitative detection method for saflufenacil in plant-derived foods. Background technique [0002] Plant-derived food refers to the food produced and processed based on the plant itself and its additional products, mainly including grains, potatoes, beans and their products, fruit and vegetable products, tea, etc. Plant-derived foods are generally obtained through large-scale cultivation. In the process of crop cultivation, in order to increase yield and reduce pests and diseases, it is generally necessary to apply chemical agents such as herbicides and insecticides. Therefore, the detection of chemical agent residues is a plant-derived Necessary part of food quality control. [0003] Saflufenacil is a uracil herbicide developed and developed by BASF. It is a protoporphyrinogen oxidase (PPO) inhibitor. It can effectively control corn, sorghum, soyb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/14B01J20/281
CPCG01N30/06G01N30/14
Inventor 黄伙水荣杰峰何荣生周茹其黄思虹
Owner 泉州海关综合技术服务中心