Development of a SPE-HPLC-PDA method for the determination of tetracyclines in soils

文献类型： 外文期刊

第一作者： Sun, Baoli

作者： Sun, Baoli;Dong, Yiwei;Shan, Hong;Huang, Jinli;Tong, Chengfeng

作者机构：

关键词： tetracyclines (TCs);soil;HPLC/PDA;spe;MAX

期刊名称：ENVIRONMENTAL TECHNOLOGY AND RESOURCE UTILIZATION II

ISSN： 1660-9336

年卷期： 2014 年 675-677 卷

页码：

收录情况： SCI

摘要： A simple and rapid SPE-HPLC/PDA method has been developed for the quantitative determination of tetracyclines in soils. An ultrasonic extraction system for the soil samples was confirmed as a combination of a 1: 2 ratio of EDTA-McIlvaine buffer solution with methanol by comparing the extraction efficiency of 4 solvents and optimising the combination ratio. The soil extracts were purified and concentrated by Oasis-MAX cartridge followed by HPLC separation and PDA detection. The optimal chromatographic condition effectively separated the object and interfering substance, which can improve the sensitivity of the instrument. The limits of detection were lower than 20 mu g.kg(-1), and the limits of quantification were no more than 60 mu g.kg(-1) for all compounds in the soil. The recoveries of tetracyclines peaked at levels of 50-500 mu g.kg(-1) and averaged at 62.1% to 108.9% with relative standard deviation values of less than 5%. This method was applied to analyse real soil samples from suburban Beijing farmland, and TC and OTC residues were detected in the soil.

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