Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33991
Title: Ultrasensitive and rapid screening of mercury(II) ions by dual labeling colorimetric method in aqueous samples and applications in mercury-poisoned animal tissues
Authors: Deng, Y
Wang, X
Xue, F
Zheng, L
Liu, J
Yan, F 
Xia, F
Chen, W
Keywords: Dual labeling colorimetric method
Hg2+ detection
Mercury poisoned animal tissues
Signal amplification
Issue Date: 2015
Publisher: Elsevier
Source: Analytica chimica acta, 2015, v. 868, p. 45-52 How to cite?
Journal: Analytica Chimica Acta 
Abstract: Rapid and ultrasensitive detection of trace heavy metal mercury(II) ions (Hg2+) are of significant importance due to the induced serious risks for environment and human health. This presented article reports the gold nanoparticle-based dual labeling colorimetric method (Dual-COLO) for ultrasensitive and rapid detection of Hg2+ using the specific thymine-Hg2+-thymine (T-Hg2+-T) as recognition system and the dual labeling strategy for signal amplification. Both qualitative and quantitative detections of Hg2+ are achieved successfully in aqueous samples. More importantly, the achieved detection limit of 0.005ngmL-1 (0.025nM) without any instruments is very competitive to other rapid detection methods even ICP-MS based methods. This Dual-COLO method is also applied directly for real water sample monitoring and, more importantly, applied in analysis of mercury poisoned animal tissues and body fluidic samples, indicating a potentially powerful and promising tool for environmental monitoring and food safety control.
URI: http://hdl.handle.net/10397/33991
ISSN: 0003-2670
DOI: 10.1016/j.aca.2015.02.003
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