【摘要】 介绍断续流动氢化物发生原子荧光测定饮用水中汞的方法,研究了酸度、硼氢化钾浓度、灯电流、载气流速等对测定汞的影响.在优化的分析条件下,检测限为0.02ng/mL,方法应用于水样中汞的测定,样品加标回收率在96.2%~102%之间,相对标准偏差为2.3%.方法具有操作简便、快速、灵敏度高等优点.更多还原

【Abstract】 A method for the determination of mercury in drinking water by the intermittent flow hydride generation atomic fluorescence spectrometry was described.Optimum working conditions of the instrument were studied,including current of hollow cathode lamp,flow rate of carrier gas,concentration of potassium tetrahydroborate solution,acidity of sample solution.Under the optimum condition,the detection limit was 0.02ng/mL.The method has been applied to the determination of mercury in drinking water.The recovery determined via adding standard was in the range of 96.2 %～102 %.The relative standard deviation was 2.3 %.The method was simple,rapid sensitive and accurate.更多还原