摘要
采用火焰加热T型石英管原子化器氢化物—原子吸收光谱法测定水体中痕量铅,以草酸作抑制铜、铁等共存元素的干扰,铁氰化钾作氧化剂,在283.3nm测得铅的特征灵敏度<0.1ng/ml1%吸收,测定铅浓度为0.004ppm的水体,相对标准偏差为5.63%。
A method for determination of trace amounts of Pb in water by hydride generation-atomic absorption spectrometry with a flame heated quartz tube atomazator is described in this paper.Interference of some co-existing elements, such as Cu, Fe etc, can be eliminated by the oxalic acid. Potassium ferricyanide is chosen as the oxidizing agent. The characteristic sensitivity obtained for Pb is <0.1ng / ml 1% absorption at 283.3nm. Relative standard deviation is 5.63% for the determination of 0.004ppm Pb.
出处
《华东师范大学学报(自然科学版)》
CAS
CSCD
1994年第3期66-70,共5页
Journal of East China Normal University(Natural Science)
关键词
氢化物
原子吸收光谱
铅
水
hydride generation, atomic absorption spectrometry (AAS), flame atomic absorption spectrometry (FAAS), trace amounts of Pb