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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Determination of Four Carbamate Pesticides in Corn by Cloud Point Extraction and High-Performance Liquid Chromatography in the Visible Region Based on Their Derivatization Reaction
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Determination of Four Carbamate Pesticides in Corn by Cloud Point Extraction and High-Performance Liquid Chromatography in the Visible Region Based on Their Derivatization Reaction

机译：基于衍生化反应的可见点浊点萃取-高效液相色谱法测定玉米中四种氨基甲酸酯类农药

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摘要

A highly sensitive method for the determination of arprooarb (AC), carbofuran (CF), isoprocarb (IC), and fenobucarb (FC) is proposed. The method is based on alkaline hydrolysis of the four carbamate pesticides, and the resultant hydrolysis products are reacted with 4-aminoantipyrene (AP) to give four red color products. The colored compounds are enriched and separated by cloud point extraction (CPE) method, and the coacervate phase containing the compounds is determined with a high-performance liquid chromatography (HPLC) system in the visible region. AC, CF, IC, and FC were determined on the basis of a linear correlation between the signals of the colored compounds and the concentrations of the pesticides. The method is applied to determine the four pesticides in corn samples;the limits of detection are 2.0 x 10~(-4) mg L~(-1) for AC, CF, and IC and 5.0 x10~(-4) mg L~(-1) for FC, with recoveries ranging between 84.8 and 93.0%, at spiking levels of 5 x 10~(-3), 2 x 10~(-2), and 0.2 mg kg~(-4), respectively.
机译：提出了一种测定灵虫药（AC），呋喃丹（CF），异丙菌威（IC）和非诺威威（FC）的高灵敏度方法。该方法基于四种氨基甲酸酯农药的碱性水解，然后将所得水解产物与4-氨基安替比林（AP）反应，得到四种红色产物。通过浊点萃取（CPE）方法富集和分离有色化合物，并通过高效液相色谱（HPLC）系统在可见光区域确定包含化合物的凝聚层相。根据有色化合物的信号与农药浓度之间的线性相关性，确定了AC，CF，IC和FC。该方法用于测定玉米样品中的四种农药;对于AC，CF和IC的检出限为2.0 x 10〜（-4）mg L〜（-1），对于5.0 x10〜（-4）mg L FC的〜（-1）回收率介于84.8和93.0％之间，加标水平分别为5 x 10〜（-3），2 x 10〜（-2）和0.2 mg kg〜（-4）。 。

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