水源地有机农药在线监测技术的应用研究

使用Aquapod SPE 250在线监测仪开发了9种微量有机农药的在线监测方法，对其在重点饮用水水源地平岗泵站的实际应用进行了研究，并对该仪器的突发污染预警能力进行了测试评估。结果显示，Aquapod SPE 250在线监测阿特拉津、甲萘威、对硫磷、2，4-二氯苯酚、2，4，6-三氯苯酚、五氯酚、苯酚、敌草隆和绿麦隆等农药残留值的检出限较低，满足GB3838-2002《地表水环境质量标准》的要求；平岗泵站2013年1-5月的有机农药残留值虽未超过我国标准，但已超出《欧盟饮用水水质指令》的检出限值；在实际水样中添加阿特拉津标准物质，Aquapod SPE 250的测定光谱异常，仪器出现报警信号，表明该仪器可用于有机农药的突发污染预警。

Application of on-line monitoring of organic pesticides in water source area

An on-line monitoring method for nine organic pesticides was developed with the Aquapod SPE 250 and applied to a key water source protection area , the Pinggang Pumping Station .The instrument ’ s sudden pollution early warning function was tested and evaluated .The results show that the limit detection levels of atrazine;carbaryl; parathion; 2 , 4-dichlorophenol; 2 , 4 , 6-trichlorophenol; pentachlorophenol; phenol; diuron; and chlortoluron monitored with the Aquapod SPE 250 were low enough to meet the requirements of the Surface Water Environmental Quality Standards （ GB 3838-2002 ） .The concentration levels of organic pesticides in raw water collected from January to May , 2013 , were lower than the standard limit of China , but the total concentration of organic pesticides exceeded the detection limit of the European Drinking Water Directive .Analytical-standard atrazine was added to the raw water and detected with the Aquapod SPE 250 .The instrument showed an unusual special spectrum and a warning signal , indicating that the instrument is useful in early warning of sudden pollution of organic pesticides .