Determination of acequinocyl and hydroxyacequinocyl on fruits and vegetables by HPLC-DAD
Determination of acequinocyl and hydroxyacequinocyl on fruits and vegetables by HPLC-DAD
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DOI：
10.1021/jf0487304
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发表时间：
2004-11-03
影响因子：
6.1
通讯作者：
Cabras, P
中科院分区：
文献类型：
--
作者：
Caboni, P;Sarais, G;Cabras, P
本文描述了一种采用高效液相色谱法（HPLC）测定水果和蔬菜（葡萄、柠檬、梨和番茄）上新型低风险农药喹螨醚及其脱乙酰化衍生物羟基喹螨醚残留量的方法。采用正己烷和乙酸乙酯溶液（1:1，体积比）从水果和蔬菜中提取农药，通过高效液相色谱 - 二极管阵列检测器（HPLC - DAD）在250 nm处测定，并经液相色谱/质谱（LC/MS）确证。无需净化处理。该方法的特点是回收率（0.01 - 4 mg/kg）>77%，而变异系数确定小于11%。对于所有基质，喹螨醚和羟基喹螨醚的定量限均为0.01 mg/kg。
A method for determining residues of the new reduced-risk pesticide acequinocyl and its deacetylated derivative hydroxyacequinocyl on fruits and vegetables (grapes, lemons, pears, and tomatoes) by HPLC is described. The pesticides were extracted from the fruits and vegetables with hexane and ethyl acetate solution (1:1, v/v), determined by HPLC-DAD at 250 nm and confirmed by LC/MS. No cleanup was necessary. This method is characterized by recoveries (0.01-4 mg/kg) > 77%, while the coefficient of variation was determined to be less than 11%. The limit of quantitation for both acequinocyl and hydroxyacequinocyl was 0.01 mg/kg for all matrixes.