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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 L9 (34) was chosen. The results showed...
This paper presents a new headspace-liquid-phase microextraction (HS-LPME) strategy for extraction and preconcentration of benzene, toluene, ethyl- benzene, and o-, m- and p-xylenes (BTEXs) from aqueous samples. A typical room temperature ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM]PF6), was used as extractant, and the extract was subsequently determined by gas chromatography-hydrogen...
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