硫离子修饰的金纳米棒用于汞离子检测

Determination of Hg^(2+) by S^(2-) Modified Gold Nanorods

表面修饰硫离子的金纳米棒可与汞发生相互作用,导致体系的共振光散射(RLS)和紫外-可见吸收光谱发生变化。利用这种特殊的选择性结合反应建立了一种采用RLS技术定量检测水溶液中汞离子的新方法。在优化的实验条件下,汞离子分析测定的线性范围为0.1—10.0μm ol.L-1,检出限为0.096μm o.lL-1。

The gold nanorods modified by sulfur ions can interact with mercury ions,resulted in the change of resonance light scattering （RLS） and UV-Visible absorption spectra. A method for quantitative detection of mercury ions in aqueous solution was established by RLS technology on the basis of above specific reaction. In the optimum experimental conditions, the linear range of the concentration of Hg^2＋ was 0. 1-10.0μmol.L^-1 ,with detection limit of 0. 096μmol . L-1.