【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) ,结果较为满意更多还原

【Abstract】 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.更多还原