A simple and label-free sensor for mercury(II) detection in aqueous solution by malachite green based on a resonance scattering spectral assay

作者：Wu, Yuangen; Zhan, Shenshan; Xu, Lurong; Shi, Weiwei; Xi, Tao; Zhan, Xuejia; Zhou, Pei^*

来源：Chemical communications, 2011, 47(21): 6027-6029.

DOI：10.1039/c1cc10563a

• ON FLUORESCENT SENSOR
• COLORIMETRIC DETECTION
• OPTICAL-DETECTION
• RAMAN-SCATTERING
• HG2+
• ION
• APTAMER
• DNA
• MEDIA
• PROBE

Mercury ions (Hg(2+)) can specifically interact with the thymine-rich Hg(2+) aptamer and malachite green (MG) to form the Hg(2+) aptamer-MG-Hg(2+) complex, inducing the increase of resonance scattering (RS) intensity at 611 nm, which enables the label-free detection of Hg(2+) in aqueous solution with high selectivity and a detection limit of 1.7 nM.

• 出版日期2011
• 单位贵州大学; 上海交通大学