共振光散射法测定汞-硫氰酸盐-罗丹明B体系中的汞  

Determination of Mercury (II) with Mercury (II)-thiocyanate-rhodamine B by Resonance Light-scattering Method

作　　者：王照丽[1] 李树伟[1] 张万诚[2] 谭舒敏[2] 

机构地区：[1]四川师范大学化学与生命科学学院,四川成都610066 [2]四川师范大学分析测试中心,四川成都610066

出　　处：《四川师范大学学报（自然科学版）》2002年第3期295-297,共3页Journal of Sichuan Normal University（Natural Science）

摘　　要：研究了汞 (II)与硫氰酸盐和罗丹明B形成离子缔合物的共振光散射的增强效应 ,拟定了一种新的测定汞的共振光散射方法 .通过实验确定了适宜的反应条件以及共振光散射强度与汞 (II)浓度之间的关系 .在λ =6 15nm处 ,共振光散射有最大的散射强度 ,并且共振光散射强度与汞 (II)浓度成线性关系 ,线性范围为 0 .0～ 0 .0 6 0 μg mL ,检测限为 0 .38μg L .该法简便、快速 ,实测水中的汞 (II) 。The enhanced effect with mercury (II)-thiocyanate-rhodamine B by resonance light-scattering method is studied in this paper. And a new method of determining mercury (II) is founded. The optimum reaction conditions and the quantitative relationship between the intensities of RLS and the concentration of mercury have been established. The RLS intensity is maximum at 615 nm and proportional to the concentration of mercury. The method is simple and rapid with a detection limit 0.38 μg/L, and the linear range is 0.0～0.060 μg/mL. It has been applied to the determination of mercury in water with satisfactory results.

关 键 词：共振光散射法 汞-硫氰酸盐-罗丹明B体系 含量测定 散射强度 环境监测 环境水样 

分 类 号：X832[环境科学与工程—环境工程]