摘要
本文使用美国PE5100-ZM石墨炉原子吸收仪,在不同时间测得的Cd、Ag、Pb三元素的“特征质量m_o”值的稳定性,结果分布为:Cd(1.10≤m_o≤1.36,RSD％=7.6％);Ag(4.12≤m_o≤4.40,RSD％=2.5％);Pb(26.4≤m_o≤31.2,RSD％=6.8％)。然后用绝对分析法对饮用水中各元素进行不同时间的加标回收测定,其回收率分布为:Cd(86％～115％);Ag(90％～110％);Pb(82％～120％)。结果表明对饮用水中重金属元素实现绝对分析是可行的,其发展前景是很乐观的。
The article is based on research of the stability of the mo of element Cd, Ag, Pb on PE5100-ZM GFAA in different time. The results' range are the following: Cd ( 1. 10≤m0≤ 1.36, RSD%=7.6%); Ag (4.12≤ m0≤4.40, RSD%=2.5%); Pb (26.4≤m0≤31.2, RSD%=6.8%). Then, the engineer of the lab measured recovery rate of each element by absolute analysis method, the results' range are the following: Cd (86% -115%); Ag (90% - 110%); PB (82%-120%), the results show that we can analyze heavy metal's concentration in drinking water by absolute analysis method which has a bright future.
出处
《现代仪器》
2001年第4期39-40,共2页
Modern Instruments
