| 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. Loaded the tap water, the MISPE cartridge was orderly washed by 2.5 mL 0.1 mol/L HCl and 2.5 mL deionized water. The MISPE cartridge was dried by nitrogen, and then washed by 1 mL 8% acetonitrile in toluene, and finally eluted by 2 mL methanol. The method was used to determinate isoproturon, fenuron, metoxuron, chlortoluron, 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. |
