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Hollow fiber supported ionic liquid membrane microextraction for determination of sulfonamides in environmental water samples by high-performance liquid chromatography
School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China.
College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China.
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2009 (English)In: Journal of Chromatography A, ISSN 0021-9673, E-ISSN 1873-3778, Vol. 1216, no 35, 6259-6266 p.Article in journal (Refereed) Published
Abstract [en]

By using ionic liquid as membrane liquid and tri-n-octylphosphine oxide (TOPO) as additive, hollow fiber supported liquid phase microextraction (HF-LPME) was developed for the determination of five sulfonamides in environmental water samples by high-performance liquid chromatography with ultraviolet detection The extraction solvent and the parameters affecting the extraction enrichment factor such as the type and amount of carrier, pH and volume ratio of donor phase and acceptor phase, extraction time, salt-out effect and matrix effect were optimized. Under the optimal extraction conditions (organic liquid membrane phase: [C8MIM][PF6] with 14% TOPO (w/v); donor phase: 4mL, pH 4.5 KH2PO4 with 2M Na2SO4; acceptor phase: 25microL, pH 13 NaOH; extraction time: 8 h), low detection limits (0.1-0.4microg/L, RSD<or=5%) and good linear range (1-2000ng/mL, R(2)>or=0.999) were obtained for all the analytes. The presence of humic acid (0-25mg/L dissolved organic carbon) and bovine serum albumin (0-100 μg/mL) had no significant effect on the extraction efficiency. Good spike recoveries over the range of 82.2-103.2% were obtained when applying the proposed method on five real environmental water samples. These results indicated that this present method was very sensitive and reliable with good repeatabilities and excellent clean-up in water samples. The proposed method confirmed hollow fiber supported ionic liquid membrane based LPME to be robust to monitoring trace levels of sulfadiazine, sulfamerazine, sulfamethazine, sulfadimethoxine and sulfamethoxazole in aqueous samples.

Place, publisher, year, edition, pages
Elsevier, 2009. Vol. 1216, no 35, 6259-6266 p.
Keyword [en]
Ionic liquid, Supported liquid membrane, Liquid phase microextraction, High-performance liquid chromatography, Sulfonamides
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:oru:diva-38461DOI: 10.1016/j.chroma.2009.06.025ISI: 000269372200001PubMedID: 19632683Scopus ID: 2-s2.0-67949108060OAI: oai:DiVA.org:oru-38461DiVA: diva2:764972
Note

Sponsors:

High-Tech Research and Development Program of China Grant(s): 2007AA06A413 

National Natural Science Foundation of China Grant(s): 20621703  20877082 

Shanghai Natural Science Foundation Grant(s): 08JC1418900 

Available from: 2014-11-21 Created: 2014-11-07 Last updated: 2017-10-17Bibliographically approved

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