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.

引用

页数：5

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