在pH=3.29的酸性介质中,硫代乙酰胺(TAA)与二价汞离子发生作用产生以379.0 nm为特征峰的共振光散射(RLS)增强光谱.在此波长下,二价汞离子的浓度与增强共振光散射强度(△IRLs)呈线性关系.研究了酸度、离子强度、温度、时间以及共存物质的影响,确定了最佳测定条件,据此建立了检测痕量汞的共振光散射分析法,线性范围为0.2～ 10.0 μmol/L,对汞的检测限为0.02 μmol/L.方法成功的应用于环境水样中汞离子的检测.
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