Pushing the limits of mercury sensors with gold nanorods

被引：305

作者：

Rex, M ^{[1
]}

Hernandez, FE ^{[1
]}

Campiglia, AD ^{[1
]}

机构：

[1] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA

来源：

ANALYTICAL CHEMISTRY | 2006年 / 78卷 / 02期

关键词：

D O I：

10.1021/ac051166r

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The method presented here provides a direct way to determine mercury in tap water samples at the parts-per-trillion level. Its outstanding selectivity and sensitivity results from the well-known amalgamation process that occurs between mercury and gold. The entire procedure takes less than 10 min. No sample separation or sample preconcentration is required. The only step prior to mercury determination consists of mixing the water sample with a gold nanorod solution in sodium borohydride. The analytical figures of merit demonstrate precise and accurate analysis at the parts-per-trillion level. The limit of detection (6.6 x 10(-13) g(.)L(-1)) shows excellent potential for monitoring ultralow levels of mercury in water samples.

引用

页码：445 / 451

页数：7

共 36 条

[1] Determination of mercury in filtered sea-water by flow injection with on-line oxidation and atomic fluorescence spectrometric detection [J].