期刊
MICROCHIMICA ACTA
卷 179, 期 1-2, 页码 33-40出版社
SPRINGER WIEN
DOI: 10.1007/s00604-012-0862-x
关键词
Sulfamethoxazole; Molecularly imprinted polymer; Polymer monolith microextraction; High-performance liquid chromatography
资金
- Natural Science Fund for Creative Research Groups of Hubei Province of China [2011CDA111]
- Education Commission of Hubei Province of China [T201101, D20120106]
- National Nature Science Foundation of China [20975030, 20835004, 21003034]
We report on a new method for the selective extraction of the antibiotic sulfamethoxazole (SMO) in milk that is making use of a molecularly imprinted polymer (MIP) monolith as the sorbent. The monolith was synthesized in the tip of a micropipette using SMO as the template and a combination of acrylamide and 4-vinylpyridine as the co-functional monomers. The monolith was connected to syringes in different sizes and used for microextraction without any other treatment and showed high selectivity and enrichment ability for SMO. It was applied to the selective extraction and sensitive determination of SMO in milk. The linear range is from 5-600 mu g L-1, the correlation coefficient (r(2)) is 0.9984, and the detection limit (at S/N = 3) is 1 mu g L-1. Recoveries range from 93.6 to 101.7 %, with relative standard deviations of < 6.1 %.
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