【摘要】 在硫酸介质中 ,利用汞 (Ⅱ )对溴酸钾氧化天青Ⅰ的催化作用 ,建立了流动注射催化光度法测定汞(Ⅱ )的新方法 ;利用单纯形优化法选择了最佳实验条件 ;方法的线性范围为0.1～2.0mg/L,检出限为0.02mg/L ,进样频率为45/h ;该法用于中药和香烟中汞 (Ⅱ )的测定 ,回收率在97.8 %～102.7 %。更多还原

【Abstract】 Anewflow-injectioncatalytic spectrophotometric method has beendeveloped forthe determinaˉtion of mercury(Ⅱ).This method is based on the catalytic effect of mercury(Ⅱ)on the oxidation of AzureⅠby potassium bromate in sulfuric acid medium.The optimal experimental conditions were obˉtained by using the controlled-and weighed-centroid simplex method.The linear range is0.1～2.0mg/L,and the detection limit is0.02mg/L.The sampling frequency is45samples per hour.The proˉposed method has been applied for the determination of mercury(Ⅱ)in Chinese patent medicine(Tianwangbuxin pill)and cigarettes.The recovery of this method is97.8%～102.7%.更多还原