期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1194, 期 1, 页码 134-138出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2008.04.030
关键词
stir bar sorptive extraction; poly (vinylpyridine-ethylene dimethacrylate); monolithic material; HPLC/DAD; phenols
A poly (vinyl pyridine-ethylene dimethacrylate) monolithic material was synthesized and selected as stir bar sorptive extraction (SBSE) medium. The influences of polymerization conditions on the extraction efficiency were investigated using phenol and p-nitrophenol as target analytes. Based on this, six strongly polar phenols in water were directly concentrated by the new SBSE and determined with high performance liquid chromatography equipped with diode array detector. To achieve the optimum extraction performance, several main parameters, including extraction and desorption time, pH value and contents of inorganic salt in the sample matrix were investigated. The method showed good linearity and acceptable recoveries, as well as advantages such as sensitivity, simplicity, low cost and high feasibility. The proposed method was successfully applied to the determination of phenolic compounds in lake and sea waters. (C) 2008 Elsevier B.V. All rights reserved.
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