化学
检出限
催化作用
铜
纳米团簇
选择性
离子
铂金
线性范围
无机化学
水溶液中的金属离子
表面改性
核化学
色谱法
物理化学
有机化学
作者
Liangliang Wu,Zhijuan Qian,Zhengjun Xie,Yingying Zhang,Chifang Peng
出处
期刊:Chinese Journal of Analytical Chemistry
[China Science Publishing & Media Ltd.]
日期:2017-04-01
卷期号:45 (4): 471-476
被引量:26
标识
DOI:10.1016/s1872-2040(17)61004-1
摘要
A sensitive colorimetric method for detection of copper ions (Cu2+) was developed based on surface modification of Ag/Pt nanoclusters (Ag/Pt NCs) and regulation of the peroxidase-like activity. It was found that 3-mercaptopropionic acid (MPA) could inhibit the catalytic ability of Ag/Pt NCs, however it would lose the inhibition toward catalytic ability of Ag/Pt NCs after oxidization by oxygen through the catalysis of Cu2+. On the basis of this, a colorimetric method was developed for the detection of Cu2+ by measuring the colorimetric signal variation of the TMB-H2O2 reaction. This method exhibited high sensitivity and selectivity toward Cu2+ over a panel of other metal ions, in the linear range of 10–100 nM with a detection limit of 5.0 nM. The method was simple and low cost, and suitable for Cu2+ detection in real water samples.
科研通智能强力驱动
Strongly Powered by AbleSci AI