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Method for detecting 3-methylpyridine in 30% chlorantraniliprole suspending agent by HPLC (High Performance Liquid Chromatography)

A technology of chlorantraniliprole and picoline, which is applied in the field of pesticide detection, can solve the problems of slow peak time, long peak time, and low accuracy, and achieve qualified resolution, short peak time, and accurate sex high effect

Pending Publication Date: 2022-06-07
贵州健安德科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Using the method [1] to detect 3-picoline in 30% chlorantraniliprole suspension concentrate, there are problems: 1) The peak eluting time is long; 2) The peak shape is not good, the resolution is poor, 3) The stability is poor; 4 ) The test result of 3-picoline content is low
[0008] Using the method [2] to detect 3-picoline in 30% chlorantraniliprole suspension concentrate, there are problems: 1) The peak time is slow, the stability is poor, the solvent consumption is large, and the accuracy is low; 2) The target peak is separated Poor accuracy, poor reproducibility, low precision
[0010] Using the method [3] to detect 3-picoline in 30% chlorantraniliprole suspension concentrate, there are problems: 1) The operation is complicated and the reproducibility is poor; 2) The peak time is long and the peak shape is not good

Method used

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  • Method for detecting 3-methylpyridine in 30% chlorantraniliprole suspending agent by HPLC (High Performance Liquid Chromatography)
  • Method for detecting 3-methylpyridine in 30% chlorantraniliprole suspending agent by HPLC (High Performance Liquid Chromatography)
  • Method for detecting 3-methylpyridine in 30% chlorantraniliprole suspending agent by HPLC (High Performance Liquid Chromatography)

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Preparation of the test solution: Accurately weigh 16.58g of this product, put it in a 50mL volumetric flask, add an appropriate amount of acetonitrile to dissolve, ultrasonically vibrate for 10min, cool to room temperature, dilute to the mark with acetonitrile, shake well, and filter, that is, have to;

[0065] (2) Preparation of reference substance solution: Precisely weigh 0.01960g of 3-methylpyridine reference substance in a 50mL volumetric flask, dilute to the mark with acetonitrile, shake well to obtain a standard stock solution, and then dilute with acetonitrile to prepare 0.00019g / mL of working solution is obtained;

[0066] (3) Determination and result calculation: the chromatographic column is ZORBAX SB-C18, 250mm×4.6mm(i.d.) stainless steel column, 5μm; the column temperature is 30℃; the detection wavelength is 261nm; the flow rate is 1ml / min; For acetonitrile, mobile phase B is dipotassium hydrogen phosphate buffer solution for gradient elution, the el...

Embodiment 2

[0070] (1) Preparation of the test solution: Accurately weigh 15 g of this product, place it in a 50 mL volumetric flask, add an appropriate amount of acetonitrile to dissolve, ultrasonically shake for 5 min, cool to room temperature, dilute to the mark with acetonitrile, shake well, and filter to obtain ;

[0071] (2) Preparation of reference substance solution: Precisely weigh 0.01960g of 3-methylpyridine reference substance in a 50mL volumetric flask, dilute to the mark with acetonitrile, shake well to obtain a standard stock solution, and then dilute with acetonitrile to prepare 0.00019g / mL of working solution is obtained;

[0072] (3) Determination and result calculation: the chromatographic column is ZORBAX SB-C18, 250mm×4.6mm(i.d.) stainless steel column, 5μm; the column temperature is 25℃; the detection wavelength is 250nm; the flow rate is 0.5ml / min; A is acetonitrile, mobile phase B is dipotassium hydrogen phosphate buffer solution for gradient elution, and the elu...

Embodiment 3

[0076] (1) Preparation of test solution: Accurately weigh 20g of this product, put it in a 50mL volumetric flask, add an appropriate amount of acetonitrile to dissolve, ultrasonically shake for 20min, cool to room temperature, dilute to the mark with acetonitrile, shake well, and filter to get ;

[0077] (2) Preparation of reference substance solution: Precisely weigh 0.01960g of 3-methylpyridine reference substance in a 50mL volumetric flask, dilute to the mark with acetonitrile, shake well to obtain a standard stock solution, and then dilute with acetonitrile to prepare 0.00019g / mL of working solution is obtained;

[0078] (3) Determination and result calculation: the chromatographic column is ZORBAX SB-C18, 250mm×4.6mm(i.d.) stainless steel column, 5μm; the column temperature is 35℃; the detection wavelength is 270nm; the flow rate is 1.5ml / min; A is acetonitrile, mobile phase B is dipotassium hydrogen phosphate buffer solution for gradient elution, and the elution proced...

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Abstract

The invention relates to a method for detecting 3-methylpyridine in a 30% chlorantraniliprole suspending agent by utilizing HPLC (High Performance Liquid Chromatography), which has the advantages of good peak shape, qualified separation degree, high accuracy, short appearance time and simplicity in operation, and provides reference for the quality of chlorantraniliprole, residues after use and the research of the chlorantraniliprole in other pesticides containing 3-methylpyridine.

Description

technical field [0001] The invention relates to a pesticide detection technology, in particular to a method for detecting 3-picoline in 30% chlorantraniliprole suspending agent by HPLC. Background technique [0002] Chlorantraniliprole is a broad-spectrum insecticide with a novel structure (bisamide / ptl: azoles). , fruit-boring moth family, leaf roller moth family, meal moth family, diamondback moth family, wheat moth family, fine moth family, etc. have a good control effect, and can also control Coleoptera Weevils, Leaf Beetles; Diptera Liriodidae ; Bemisia tabaci and other non-lepidopteran pests. [0003] The residues of pesticides in agricultural products and the toxicity to animals have always been the focus of attention. 30% Chlorantraniliprole suspending agent has a new insecticidal principle and can effectively activate the nitin (muscle) receptors of insect fish. Excessive release of calcium ions in the intracellular calcium pool leads to paralysis and death of in...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/34G01N30/86
CPCG01N30/02G01N30/06G01N30/34G01N30/8675G01N2030/047Y02A50/30
Inventor 姚龙王新张剑聂天莹陈红
Owner 贵州健安德科技有限公司
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