IMPROVED METAL EXTRACTION PROCEDURE FOR DETERMINATION OF TRACE-METALS IN SEA-WATER BY ATOMIC-ABSORPTION SPECTROMETRY WITH ELECTROTHERMAL ATOMIZATION
IMPROVED METAL EXTRACTION PROCEDURE FOR DETERMINATION OF TRACE-METALS IN SEA-WATER BY ATOMIC-ABSORPTION SPECTROMETRY WITH ELECTROTHERMAL ATOMIZATION
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DOI：
10.1016/s0003-2670(01)83237-2
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发表时间：
1978-01-01
影响因子：
6.2
通讯作者：
WESTERLUND, S
中科院分区：
文献类型：
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作者：
DANIELSSON, LG;MAGNUSSON, B;WESTERLUND, S
研究了吡咯烷二硫代氨基甲酸酯和二乙基二硫代氨基甲酸酯快速萃取石墨炉原子吸收光谱法同时测定海水中Cd、Co、Cu、Fe、Ni、Pb和Zn的方法。将金属-氨基甲酸盐络合物从500 ml海水中萃取到氟利昂TF中，并反萃取到10 ml 0.3 M硝酸中。该方法具有相当大的优势，比以前推荐的提取程序。金属被转移到一种溶液中，在这种溶液中，它们的浓度不随时间变化，并且可以很容易地储存以供运输。灵敏度高，足以分析公海沃茨。
A rapid carbamate extraction method with pyrrolidinedithiocarbamate and diethyldithiocarbamate is described for the simultaneous determination of Cd, Co, Cu, Fe, Ni, Pb and Zn in sea water by atomic absorption spectrometry with a graphite atomizer. The metal—carbamate complexes are extracted from 500 ml of sea water into Freon TF and back-extracted into 10 ml of 0.3 M nitric acid. The method has considerable advantages over previously recommended extraction procedures. The metals are transferred to a solution in which their concentrations do not change with time, and which can be easily stored for transportation. The sensitivity is high enough for analysis of open ocean waters.