Journal
CHROMATOGRAPHIA
Volume 72, Issue 11-12, Pages 1137-1141Publisher
SPRINGER HEIDELBERG
DOI: 10.1365/s10337-010-1772-x
Keywords
Gas chromatography; Headspace liquid-phase microextraction; Ionic liquid; Soil samples; Dichlorobenzene
Funding
- National Natural Science Foundation of China [50830303]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0853]
- Natural Science Foundation of Shaanxi Province in China [2009JK515]
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Headspace liquid-phase microextraction using ionic liquids as extracting solvents, followed by gas chromatographic detection was developed to determine o-dichlorobenzene, m-dichlorobenzene and p-dichlorobenzene in soil samples. The main parameters influencing the extraction of dichlorobenzene isomers were studied using the orthogonal experimental design forming L-9 (3(4)) was chosen. The results showed that the most important factors were enrichment time and pH of solution. Under the optimal conditions, limits of detections (LODs) for dichlorobenzene isomers were in the range of 0.001-0.002 mu g g(-1). The repeatability of the proposed method, expressed as RSD (n = 5), varied between 4.4 and 14.6%.
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