Journal
JOURNAL OF SEPARATION SCIENCE
Volume 38, Issue 11, Pages 1916-1923Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201401434
Keywords
Benzene series; Chlorobenzenes; Gas chromatography; Static headspace sampling; Water samples
Categories
Funding
- Test Analysis of Science and Technology Plan Projects of Zhejiang Province [2013C37088]
- Zhejiang Natural Science Foundation [LQ13C200004, LQ14B070002]
- Major science and technology plan projects of Zhejiang Province [2012F20026]
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A simple, efficient, solvent-free, and readily commercially available approach for the determination of eight benzene series compounds and 12 chlorobenzenes in water samples using the static headspace sampling and gas chromatography with flame ionization detection has been described in this paper. The proposed static headspace sampling method was initially optimized, and the optimum experimental conditions explored were 10 mL water sample containing 20% w/v sodium chloride placed in a 20 mL vial and stirred at 70 degrees C for 43 min. The linearity of the method ranged from 1 to 200 mu g/L for 20 analytes, with correlation coefficients ranging between 0.9962 and 0.9994. The limits of detection were in the mu g/L level, ranging between 0.15 and 0.4 mu g/L. The relative recoveries of spiked benzene series and chlorobenzenes with external calibration method at different concentration levels in pure, tap, and sea water samples were 84-113, 78-115 and 85-119%, respectively, with relative standard deviations of 3.8-6.8, 4.1-5.8, and 4.8-5.4% (n = 5), respectively. That this method can be successfully applied to the determination of benzene series compounds and chlorobenzenes in pure, tap, and sea water samples, simultaneously.
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