Trace Determination of Benzalkonium Chlorides in River and Wastewater by Capillary Electrophoresis following Solid‐Phase Extraction Coupled with Salting‐Out Extraction

Journal of the Chinese Chemical Society - Tập 55 Số 5 - Trang 1049-1054 - 2008
H. Liu1, Wang‐Hsien Ding2
1Department of Chemistry, National Central University, Chung-Li 32054, Taiwan, R.O.C.
2Department of Chemistry, National Central University, Chung‐Li 32054, Taiwan, R.O.C.

Tóm tắt

AbstractTrace levels analysisbenzalkonium chlorides (BAKs) in river water and wastewater treatment plants (WWTP) effluents were determined by capillary electrophoresis (CE) following solid‐phase extraction (SPE) and salting‐out extraction. Salting‐out extraction using an appropriate ratio of sodium chloride (NaCl) and acetonitrile (ACN) mixed with concentrated SPE elutant was capable of providing more than 500‐fold enhancement in detection sensitivity. The ratios of ACN and NaCl for salting‐out extraction were investigated and optimized. Matrix interference was eliminated by salting‐out extraction. Limits of quantitation of BAK homologues were achieved at 0.1 μg/L in 250 mL water samples. Recoveries of BAKs in various spiked water samples ranged from 70% to 84% with relative standard deviation (RSD) less than 9%. Trace amounts of total BAKs were detected in river water and WWTP effluent samples ranging from 27 to 145 μg/L at the first time by CE.

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10.1021/ac00018a028

10.1021/ac00033a015

10.1021/ac00072a030

10.1016/S0021-9673(98)00862-0

10.1016/S0021-9673(99)00114-4

10.1021/ac00058a720

10.1016/0165-9936(93)87025-S

10.1016/S0021-9673(97)00796-6

10.1002/elps.1150191603

10.1080/10408349891194171

10.1002/1522-2683(20017)22:11<2143::AID-ELPS2143>3.0.CO;2-E

10.1016/0043-1354(79)90094-0

Boethling R. S., 1992, The Handbook of Environmental Chemistry, 164

10.1021/ac000655i

10.1021/ac010969l

10.1016/j.chroma.2004.08.085

10.1002/elps.200500716

10.1016/S0021-9673(02)00943-3

10.1016/j.chroma.2003.10.108

10.1016/0021-9673(95)00533-1

10.1021/ac60333a023

10.1016/S0003-2670(01)84371-3

10.1021/cr60158a004

10.1016/0021-9673(93)83116-A

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Thông tin xuất bản

Journal of the Chinese Chemical Society

Tập 55 Số 5

1049-1054

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