Detection of heavy metal ions in drinking water using a high-resolution differential surface plasmon resonance sensor

被引：221

作者：

Forzani, ES

Zhang, HQ

Chen, W

Tao, NJ ^{[1
]}

机构：

[1] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA

[2] Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA

[3] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2005年 / 39卷 / 05期

关键词：

D O I：

10.1021/es049234z

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We have built a high-resolution differential surface plasmon resonance (SPR) sensor for heavy metal ion detection. The sensor surface is divided into a reference and sensing areas, and the difference in the SPR angles from the two areas is detected with a quadrant cell photodetector as a differential signal. In the presence of metal ions, the differential signal changes due to specific binding of the metal ions onto the sensing area coated with properly selected peptides, which provides an accurate real-time measurement and quantification of the metal ions. Selective detection of CU2+ and Ni2+ in the ppt-ppb range was achieved by coating the sensing surface with peptides NH2Gly-Gly-His-COOH and NH2-(HiS)(6)-COOH. CU2+ in drinking water was tested using this sensor.

引用

页码：1257 / 1262

页数：6

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