Journal
MARINE POLLUTION BULLETIN
Volume 151, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.110812
Keywords
Quantum dots; Malachite green; Polystyrene; Signal amplification; Molecularly imprinted film
Funding
- National Key Research and Development Program of China [2018YFD0901003]
- Science and Technology Planning Project of Xiamen, China [3502Z20183031]
- National Undergraduate Training Program for Innovation and Entrepreneurship [2019xj577]
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A fluorescence probe was delicately designed for the detection of malachite green (MG) in water and fish samples. Through the electrostatic self-assembly of CdTe QDs on the surface of polystyrene (PS) microspheres, the fluorescence signal was amplified. After grafting molecularly imprinted film, the fluorescence probe of MIP@ PS@CdTe was fabricated and applied to the detection of MG based on fluorescence quenching. The linear range of MG detection was 0.01-20 mu mol L-1, and the detection limit was 4.7 nmol L-1 (3 sigma, n = 9) which was much lower than those of the previous reports. The recoveries of MG in aquaculture water and fish samples ranging from 87.6% to 105.4% illustrated that the detection by MIP@PS@CdTe probe was accurate and reliable.
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