文献类型： 会议论文
第一作者： Baoli Sun
作者： Baoli Sun 1 ; Yiwei Dong 1 ; Hong Shan 1 ; Jinli Huang 1 ; Chengfeng Tong 1 ;
作者机构： 1.Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences
关键词： Tetracyclines (TCs);Soil;HPLC/PDA;Spe;MAX
会议名称： International Conference on Renewable Energy and Environmental Technology
主办单位：
页码： 279-285
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 μg·kg~(-1), and the limits of quantification were no more than 60 μg·kg~(-1) for all compounds in the soil. The recoveries of tetracyclines peaked at levels of 50-500 μg·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.
分类号： X3-53
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