期刊
CHROMATOGRAPHIA
卷 75, 期 9-10, 页码 551-555出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10337-012-2215-7
关键词
Gas chromatography-flame ionization detector; Dispersive liquid liquid microextraction; Pretreatment technique; Benzene derivatives; Water sample
资金
- State Key Program of National Natural Science of China [21037001]
- National Key Project for Basic Research of China [2008BAC32B06-1]
- National High Technology Research and Development Program of China [2009AA06Z319]
An inexpensive, simple and environmentally friendly method based on dispersive liquid liquid microextraction (DLLME) for rapid determination of benzene derivatives in water samples was proposed. A significant improvement of DLLME procedure was achieved. Trace volume ethyl acetate (60 mu L) was exploited as dispersion solvent instead of common ones such as methanol and acetone, the volume of which was more than 0.5 mL, and the organic solvent required in DLLME was reduced to a great extent. Only 83-mu L organic solvent was consumed in the whole analytic process and the preconcentration procedure was less than 10 min. The advantageous approach coupled with gas chromatograph-flame ionization detector was proposed for the rapid determination of benzene, toluene, ethylbenzene and xylene isomers in water samples. Results showed that the proposed approach was an efficient method for rapid determination of benzene derivatives in aqueous samples.
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