摘要
将涡旋搅拌与超声乳化技术相结合,制作了一种新型液相微萃取装置,并建立了磁力搅拌结合超声辅助乳化微萃取新方法。以联苯菊酯作为萃取物,考查了影响方法萃取效率的若干因素,实验结果与理论推导相符合。新方法应用于尿液中联苯菊酯的检测,在1-1000μg/L范围内线性良好,相对回收率可达98.4%,相对标准偏差可达3.5%,最大富集倍数为122,检出限为11 ng/L。
A new dispersive liquid-liquid microextraction （DLLME） device combined with vortex stirring and ultrasound radiation was fabricated. The new method called magnetic stirring combined with ultrasound assisted emulsification microextraction （MS-USAEME） was then evaluated by extracting bifenthrin in water. The experimental results were consistent with theoretical derivation, which indicated the method not only had the advantages of traditional dispersive liquid-liquid microextraction, but also significantly reduced the operation difficulty and extraction time. The established method was successfully used to analyze bifenthrin in urine. The calibration curve was linear in the concentration range from 1 analyte was 98.4% with the relative standard deviation of 3. limits of detection was 11 ng/L. to 1000 μg/L. The relative recoveries of the target 5%. Maximal enrichment factor was 122, and the
出处
《分析试验室》
CAS
CSCD
北大核心
2016年第2期244-248,共5页
Chinese Journal of Analysis Laboratory
基金
2015年北京市教育委员会共建项目计划资助
关键词
分散液相微萃取
磁力搅拌结合超声辅助乳化微萃取
样品前处理
装置
Dispersive liquid-liquid microextraction
Magnetic stirring combined with ultrasound assisted emulsification microextraction
Sample preparation
Device
