期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1593, 期 -, 页码 1-8出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2019.02.005
关键词
Antibiotics; High performance liquid chromatography; Graphene oxide; Molybdenum disulfide; Magnetic nanocomposite
资金
- Natural Science Foundation of China [21575115]
- Program for Chang jiang Scholars and Innovative Research Team, Ministry of Education, China [IRT-16R61]
- Program of Innovation and Entrepreneurial for Talent, Lan Zhou, Gansu Province, China [2014-R C-39]
- Scientific Research Program of Institutions of Higher Learning in Gansu Province, China [2017D-01]
Recently, water pollution caused by antibiotics is rapidly increasing. Thus, developing efficient, fast and sensitive detection methods for environmental antibiotics monitoring are still remaining elusive. Herein, a method for antibiotics analysis including lecofloxacin, pazcofloxacin and gatifioxacin in water by high performance liquid chromatography (HPLC) using molybdenum disulfide-graphene oxide-supported magnetic nanoparticles (Fe3O4/GO/MoS2) as the adsorbent of magnetic solid-phase extraction was developed. The as-prepared magnetic Fe3O4/GO/MoS2 nanocomposite exhibited good enrichment capability toward fluoroquinolone antibiotics and the analytes were absorbed within a short time ca. 2 min. The main drive forces of Fe3O4/GO/MoS2 nanocomposite and antibiotics were most likely attributed to hydrogen bonding and electrostatic attraction. A sensitive and effective MSPE-HPLC method was developed with low detection limits (LODs) ranging from 0.25 to 0.50 ng mL(-1). The recoveries obtained from the analysis of water sample were between 85.6% and 106.1% with relative standard deviations (RSDs, n=5) lower than 9.5%. The developed method has a good potential for the analysis of organic contaminants in water with low cost and high sensitivity. Therefore, this finding is a promising strategy for designing high efficiency and fast antibiotics detection system. (C) 2019 Elsevier B.V. All rights reserved.
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