期刊
JOURNAL OF SEPARATION SCIENCE
卷 36, 期 5, 页码 916-922出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201200963
关键词
Gas chromatography; Honey; Liquid-liquid microextraction; Tap water
资金
- National Natural Science Foundation of China [20877100, 21277171]
- Specialized Research Fund for the Doctoral program of Higher Education [20090008120016]
- Chinese Universities Scientific Fund [2011JS032]
- Program for New Century Excellent Talents in University, a Foundation for the Author of National Excellent Doctoral Dissertation of PR China
For the first time, the low-density solvent-based vortex-assisted surfactant-enhanced emulsification liquid-liquid microextraction, followed by GC-flame photometric detection has been developed for the determination of eight organophosphorus pesticides in aqueous samples. A small volume of organic extraction solvent (toluene) was dispersed into the aqueous samples by the assistance of surfactant and vortex agitator. The extraction was performed in a special disposable polyethylene pipette, allowing using the reagents with lower density than water as extraction solvents. The influence parameters were systemically investigated and optimized: toluene (30 L) and Triton X-100 (0.2 mmol/L) were used as the extraction solvent and the surfactant, respectively, and the extraction was performed for 1 min under room temperature without adding sodium chloride. Under the optimum conditions, the validation parameters such as the RSD (n = 6; 2.1-11.3%), LOD (0.005 and 0.05 g/L), and linear range (0.1-50.0 g/L with correlation coefficients (0.9958-0.9992) showed the method was satisfying. The proposed method has been successfully applied to the determination of the organophosphorus pesticides in real samples with recoveries between 82.8 and 100.2%.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据