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Reference type: Journal
Authors: Sun N, Wu SL, Chen HX, Zheng DJ, Xu JW, Ye Y
Article Title: Determination of sulfamethoxazole in milk using molecularly imprinted polymer monolith microextraction coupled to HPLC.
Publication date: 2012
Journal: Microchimica Acta
Volume: 179
Issue: (1)
Page numbers: 33-40.
DOI: 10.1007/s00604-012-0862-x

Abstract: 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 μg L-1 , the correlation coefficient (r 2 ) is 0.9984, and the detection limit (at S/N = 3) is 1 μg L-1 . Recoveries range from 93.6 to 101.7 %, with relative standard deviations of > 6.1 %
Template and target information: sulfamethoxazole, SMO
Author keywords: sulfamethoxazole, molecularly imprinted polymer, Polymer monolith microextraction, high-performance liquid chromatography

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