Ultratrace determination of carbamate pesticides in water samples by temperature controlled ionic liquid dispersive liquid phase microextraction combined with high performance liquid phase chromatography

作者：Zhou, Qingxiang^*; Pang, Long; Xiao, Junping

来源：Microchimica Acta, 2011, 173(3-4): 477-483.

DOI：10.1007/s00604-011-0587-2

• 1-Hexyl-3-methylimidazolium hexafluorophosphate
• Carbamate pesticides
• Temperature controlled ionic liquid dispersive liquid phase microextraction
• High performance liquid chromatography

A simple and sensitive method was developed for the determination of three carbamate pesticides in water samples. It is based on temperature controlled ionic liquid dispersive liquid phase microextraction combined with high-performance liquid chromatography. The ionic liquid 1-hexyl-3-methylimidazolium hexafluorophosphate was used as the extractant, and the factors affecting the extraction were investigated in detail. The detection limits obtained for isoprocarb, diethofencarb and fenothiocarb are 0.91, 0.45, and 1.40 mu gL(-1), respectively, and the precisions are in the range between 1.0 and 1.8% (n = 6). The method was validated with environmental water samples and the results indicate that it represents a viable alternative to existing methods.

• 出版日期2011-6
• 单位河南师范大学; 北京科技大学; 中国石油大学（北京）