Simultaneous identification and determination of three different classes of pesticides in Tehran drinking water by HPLC/UV technique

Mahtab Baghban, A. Rezaian, E. Hashemi
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Abstract

An efficient sample extraction using solid-phase extraction coupled with liquid-chromatography was studied for the analyses of three different types and chemical group pesticides from drinking water. The extraction was performed using a Waters Sep-Pak C-18 cartridge. A validation of the method was performed. Linearity (0.005-1000, 0.01-1000, 4-1000, 10.5-1000 and 9.48-1000 µg.L-1 for Simazine, Atrazine, Isoproturon, Metolachlor and Chlorotoluron respectively range), within-day precisions ranged from 4.8 to 6.7% and the between day precisions ranged of 7.8-13.3 % based on the peak areas for five replicates, limits of detection (0.001-2.846 µg.L-1) were calculated. The preconcentration factors (PFs) were obtained under the optimum conditions (15.04-22.53). The information obtained from the method validation has been used to estimate for the determination of pesticides at trace levels in water samples which collected from water treatment plants of Tehran, the capital of Iran.
高效液相色谱/紫外分光光度法测定德黑兰饮用水中3种农药
研究了固相萃取-液相色谱法对饮用水中三种不同类型和化学基团农药的高效萃取方法。使用Waters Sep-Pak C-18萃取筒进行提取。对该方法进行了验证。线性(0.005- 1000,0.01 - 1000,4 - 1000,10.5 -1000和9.48-1000µg)。依5个重复的峰面积计算,日内精密度为4.8 ~ 6.7%,日间精密度为7.8 ~ 13.3%,检出限为0.001 ~ 2.846µg.L-1。在最佳条件(15.04 ~ 22.53)下,得到了预富集因子(PFs)。从方法验证中获得的信息已用于估计从伊朗首都德黑兰的水处理厂收集的水样中痕量农药的测定。
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