氢化物发生-原子荧光光度法测定水和废水中的总硒和四价硒

The Determination of Total and Tetravalent Selenium in Water and Waste Water by Hydride Generation-atom Fluorescent Spectrometry

利用氢化物发生 原子荧光分析技术测定水和废水中的总硒和四价硒 ,实验结果表明 :对不同浓度标准溶液进行测定 ,硒的相对标准偏差分别为 5 .7% ,2 .3%和 1.4 % ;水样加标多次测定 ,硒的回收率分别在 90 %～ 10 9%之间。方法的最低检出量为 0 .0 14 μg ;最低检出浓度为 0 .5 6 μg/L ,测定上限为 30 0 μg/L。

Total and tetravalent selenium in water and waste water was determined by hydride generation atom fluorescent spectrometry.The results showed the relative standard deviations of 5.7%,2.3% and 1.4% for different standard solutions and average spike recovery of 90%～109% for several testing.The method determination limit was 0.014μg and lowest and highest determination concentrations were 0.56μg/L and 300μg/L,respectively.