Journal
ANALYTICAL METHODS
Volume 9, Issue 2, Pages 282-286Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ay02686a
Keywords
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Funding
- Natural Science Foundation of China [21575044, 21275059, 21377124]
- Natural Science Foundation of Fujian Province [2013J01047, 2014J01048, 2015J01054, 2016J01062]
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In this paper, a novel fluorescent immunosensor based on self-assembled multilayers was constructed to detect microcystin-(leucine-arginine). CdTe quantum dots were firstly assembled on the quartz substrates. Then bioconjugates were formed by an amidation reaction between CdTe quantum dots and microcystin-(leucine-arginine) antibodies. The sensing system exhibited a linear range from 0.0001 to 3 mg L-1 or microcystin-(leucine-arginine) with a detection limit of 0.0440 ng L-1, 2-4 orders of magnitude lower than most other fluoroimmunoassays. Desirable results were also obtained in natural lake water and interference experiments. The fluorescent immunosensor based on self- assembled multilayers has great potential for the rapid, sensitive detection of trace amounts of microcystin-(leucine-arginine) in real water samples.
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