期刊
TALANTA
卷 142, 期 -, 页码 43-50出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2015.04.038
关键词
Non-polar solvent extraction; Dynamic microwave assisted extraction; Herbicides; Soybean; MIL-101(Cr)
Non-polar solvent dynamic microwave assisted extraction was firstly applied to the treatment of high-fat soybean samples. In the dispersive micro-solid-phase extraction (D-mu-SPE), the herbicides in the high-fat extract were directly adsorbed on metal-organic frameworks MIL-101(Cr). The effects of several experimental parameters, including extraction solvent, microwave absorption medium, microwave power, volume and flow rate of extraction solvent, amount of MIL-101(Cr), and D-mu-SPE time, were investigated. At the optimal conditions, the limits of detection for the herbicides ranged from 1.56 to 2.00 mu g kg(-1). The relative recoveries of the herbicides were in the range of 91.1-106.7%, and relative standard deviations were equal to or lower than 6.7%. The present method was simple, rapid and effective. A large amount of fat was also removed. This method was demonstrated to be suitable for treatment of high-fat samples. (C) 2015 Elsevier B.V. All rights reserved.
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