饮用水中苯基脲除草剂的分子印迹固相萃取方法研究

以N-（4-异丙基苯基）-N-亚丁基脲分子印迹聚合物为吸附剂，建立了饮用水中苯基脲除草剂的分子印迹固相萃取方法。上样后固相萃取柱依次用2．5mL0．1mol／L盐酸和2．5mL去离子水淋洗，然后氮气吹干，再用1mL含8％乙腈的甲苯溶液淋洗，最后用2mL甲醇洗脱。将建立的方法用于自来水中异丙隆、非草隆、甲氧隆、绿麦隆、枯莠隆、灭草隆、伏草隆、草不隆等8种苯脲类除草剂的测定，除伏草隆和草不隆的回收率较低外，其余6种除草剂的回收率均〉60％。

Molecularly Imprinted Solid-phase Extraction for Phenylurea Herbicides Determination in Drinking Water

Molecular imprinting solid-phase extraction （MISPE） was developed for phenylurea herbicides in drinking water by using N-（4-isopropylphenyl）-N＇-butyleneurea molecularly imprinted polymer as sorbent. Load- ed the tap water, the MISPE cartridge was orderly washed by 2.5 mL 0.1 mol/L HCl and 2.5 mL deionized wa- ter. The MISPE cartridge was dried by nitrogen, and then washed by 1 mL 8% acetonitrile in toluene, and final- ly eluted by 2 mL methanol. The method was used to determinate isoproturon, fenuron, metoxuron, chlortolu- ron, difenoxuron, monuron, fluometuron and neburon in tap water. Test results of recoveries for those herbicides were more than 60% except for the fluometuron and neburon.