Graphite Furnace Atomic Absorption Spectrometry of Copperin Sea Water by Using Coprecipitation Concentration Method

Hiroshi NISHIOKA, Yoshimichi MAEDA, Takatugu AZUMI
1986 Bulletin of the Society of Sea Water Science, Japan  
Determination of copper in sea water was studied by graphite furnace atomic absorption spectrometry (GFAAS). Cu (II) ions were preconcentrated by a precipitation methodusing Al (III) ions and sodium diethyldithiocarbamate (DDTC) at pH7. The precipitate containing copper was collected on a melnbrane filter paper, and then dissolved with 30ml of HNO3(1+12), followed by evaporation to drylless. The sample solution for GFAAS was obtained by redissolving the evaporation residue with 10ml of HNO3
more » ... 2). It was possible to determine Cu (II) ions without any interfering effects of the copresence ions in sea water. The limit of detection and the limit of determination were 0.7μg/l, 2.4μg/l, respectively. This method was satisfactorily applied to the determination of Cu (II) ions in sea water.
doi:10.11457/swsj1965.40.100 fatcat:lry4zrfigfamfo3nl3oyljycoe