Colorimetric detection uranyl ions based on the enhanced peroxidase-like activity by GO adsorption

被引：29
|
作者：
Lin, Xi [1 ,2 ,3 ]
Xuan, Dongliang [3 ]
Liang, Hao [1 ,2 ]
Xiao, Fubing [1 ,2 ]
Li, Feifei [1 ,2 ]
Liu, Can [1 ,2 ]
Fan, Pengfei [1 ,2 ]
Hu, Congcong [1 ,2 ]
Yang, Shengyuan [1 ,2 ]
Liu, Yong [4 ,5 ]
机构：
[1] Univ South China, Coll Publ Hlth, Hengyang 421001, Peoples R China
[2] Key Lab Hengyang Hlth Hazard Factors Inspect & Qu, Hengyang 421001, Peoples R China
[3] Jiading Ctr Dis Control & Prevent, Shanghai 201800, Peoples R China
[4] Hunan Prov Engn Res Ctr Radioact Control Technol, Hengyang 421001, Peoples R China
[5] Hunan Prov Engn Technol Res Ctr Uranium Tailings, Hengyang 421001, Peoples R China
来源：
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2020年 / 220卷
基金：
中国国家自然科学基金;
关键词：
Colorimetric probe; Uranyl ions; Hydrogen peroxide; Graphene oxide; 3,3 ',5,5 '-tetramethylbenzidine; GRAPHENE; HYBRID; SORPTION;
D O I：
10.1016/j.jenvrad.2020.106299
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Based on the fact that uranyl ions (UO22+) adsorbed on GO can enhanced the peroxidase-like activity of graphene oxide (GO), a novel colorimetric strategy for visualizing quantitative determination of uranyl ions was established. The peroxidase-like activity of GO-UO22+ nanocomposites was assessed by catalyzing H2O2 oxidation of TMB to produce a distinct color reaction. A good linearity between the UO22+ concentration and absorption at 652 nm was acquired in the range of 5.90 x 10(-6) to 9.43 x 10(-4) M with a detection limit of 4.70 mu M. This strategy was also successfully applied to determination of uranyl ions in environmental water samples.
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页数：5
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