"Reactive" optical sensor for Hg2+ and its application in environmental aqueous media and biological systems

被引：10
作者：
Chen, Zhi [1 ]
Chen, Jiayun [1 ]
Pan, Dong [2 ]
Li, Hongwei [2 ]
Yao, Yunhui [1 ]
Lyu, Zu [1 ]
Yang, Liting [1 ]
Ma, Li-Jun [1 ,3 ]
机构：
[1] South China Normal Univ, Sch Chem & Environm, Guangzhou 510631, Guangdong, Peoples R China
[2] Jilin Univ, State Key Lab Supramol Struct & Mat, 2699,Qianjin St, Changchun 130012, Peoples R China
[3] South China Normal Univ, Key Lab Theoret Chem Environm, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China
来源：
ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2017年 / 409卷 / 09期
关键词：
Hg2+; Reactive" sensor; Colorimetric; Fluorescent turn-on; Rhodamine B; RHODAMINE-BASED FLUORESCENT; MERCURY; PROBE; HG(II); IONS; CHEMODOSIMETER; CHEMOSENSOR; EXPOSURE; CU2+;
D O I：
10.1007/s00216-017-0189-x
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
A new rhodamine B-based "reactive" optical sensor (1) for Hg2+ was synthesized. Sensor 1 shows a unique colorimetric and fluorescent "turn-on" selectivity to Hg2+ over 14 other metal ions with a hypersensitivity (detection limits are 27.6 nM (5.5 ppb) and 6.9 nM (1.4 ppb), respectively) in neutral buffer solution. To test its applicability in the environment, sensor 1 was applied to quantify and visualize low levels of Hg2+ in tap water and river water samples. The results indicate sensor 1 is a highly sensitive fluorescent sensor for Hg2+ with a detection limit of 1.7 ppb in tap water and river water. Moreover, sensor 1 is a convenient visualizing sensor for low levels of Hg2+ (0.1 ppm) in water environment (from colorless to light pink). In addition, sensor 1 shows good potential as a fluorescent visualizing sensor for Hg2+ in fetal bovine serum and living 293T cells. The results indicate that sensor 1 shows good potential as a highly sensitive sensor for the detection of Hg2+ in environmental and biological samples.
引用
收藏
页码：2429 / 2435
页数：7
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