董社英
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所属单位:化学与化工学院
发表刊物:Microchemical Journal
关键字:中文关键字:离子液体,液液微萃取,土壤样品,英文关键字:
摘要:A simple and efficient method known as the ionic liquid-based ultrasound-assisted dispersive liquid-liquid microextraction (IL-USA-DLLME) combined with high -performance liquid chromatography (HPLC) was successfully developed for the extraction and determination of three phytocides (imazethapyr, bensulfuron, and uniconazole) in soil samples. Several experimental parameters that influence extraction and determination, such as the type and volume of extraction solvent, the volume of disperser solvent, pH of solution, salt effect, ultrasound time, and the chromatographic conditions were investigated. Under optimal conditions, a linear relationship was observed in the range of 0.1000 -200.0 μg/mL with the correlation coefficients (r2) ranging from 0.9965 to 0.9990, and the limit of detections (LODs) ranged from 0.0500 to 0.3100 μg/mL for the three analytes. The relative standard deviations (RSD) at two spiking with different concentration levels of 6.600 μg/mL and 16.00 μg/mL varied from 0.9% to 2.4% (n=6), and recoveries were between 87.10-95.01%. On the basis of this, phytocides in two actual soil samples from a wheat field and a vegetable farm were analyzed. This work demonstrated that IL-USA-DLLME method with 1-Butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([BMIM]TFSI) could be used to detect the trace amounts of phytocides in soils. This method has the advantage of high extraction efficiency, good sensitivity, simplicity and environmental friendliness.
备注:董社英
合写作者:QingHu,ZhenYang,RongLiu,Guiqi,HuangTingli
第一作者:董社英
论文类型:期刊论文
卷号:卷:
期号:期:110
页面范围:页:
是否译文:否
发表时间:2013-04-01