期刊
JOURNAL OF SEPARATION SCIENCE
卷 38, 期 20, 页码 3552-3559出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201500556
关键词
Chlorophenols; Dispersive liquid-liquid microextraction; Gas chromatography with mass spectrometry; In situ silylation; Water and wastewater
资金
- Central Laboratory of Isfahan University of Technology (IUT)
- Research Council of Isfahan University of Technology (IUT)
- Center of Excellence in Sensor and Green Chemistry
Trace analysis of chlorophenols in water was performed by simultaneous silylation and dispersive liquid-liquid microextraction followed by gas chromatography with mass spectrometry. Dispersive liquid-liquid microextraction was carried out using an organic solvent lighter than water (n-hexane). The effect of different silylating reagents on the method efficiency was investigated. The influence of derivatization reagent volume, presence of catalyst and derivatization/extraction time on the yield of the derivatization reaction was studied. Different parameters affecting extraction efficiency such as kind and volume of extraction and disperser solvents, pH of the sample and addition of salt were also investigated and optimized. Under the optimum conditions, the calibration graphs were linear in the range of 0.05-100 ng/mL and the limit of detection was 0.01 ng/mL. The enrichment factors were 242, 351, and 363 for 4-chlorophenol, 2,4-dichlorophenol, and 2,4,6-trichlorophenol, respectively. The values of intra-and inter-day relative standard deviations were in the range of 3.0-6.4 and 6.1-9.9%, respectively. The applicability of the method was investigated by analyzing water and wastewater samples.
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