期刊
MARINE POLLUTION BULLETIN
卷 146, 期 -, 页码 591-597出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.07.010
关键词
MIP-QDs; Fluorescent probe; Sulfadiazine; Antibiotic residue; Seawater
资金
- National Natural Science Foundation of China [41876078]
- Special Found for Basic Scientific Research in Central Colleges and Universities [201713059]
- national key research and development program [2016YFC1402101]
- Shandong Provincial Natural Science Foundation [ZR2018MD016]
A molecularly imprinted polymer (MIP) anchored on the surface of CdTe quantum dots (QDs) was fabricated and used as a fluorescent probe for sulfadiazine (SDZ) detection in seawater. CdTe QDs was used as photoluminescent material, SDZ as the template, 3-aminopropyltriethoxysilane (APTES) as the functional monomer and tetraethyl orthosilicate (TEOS) as the cross-linking agent. Characterizations of MIP-QDs were analyzed by Fourier transform infrared (FT-IR), Transmission electron microscopy (TEM) and Scanning electron microscope (SEM). The conditions were optimized for the detection of MIP-QDs to SDZ. The mechanism of fluorescence quenching was studied by UV-Vis absorption spectroscopy and fluorescence spectroscopy. Under optimal conditions, the fluorescence intensity of MIP-QDs decreased linearly between 4- and 20 mu M SDZ with a good correlation coefficient of 0.995. The limit of detection is 0.67 mu M and the recovery is between 91.8 and 109.4% with RSD lower than 3.9%. These results indicated that MIP-QDs for SDZ detection in seawater was developed successfully.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据