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Interference effects in the extraction of trace metals from estuarine waters
D. J. Mackey ; J. E. O'Sullivan ; R. J. Watson and G. Dal Pont
发表期刊Marine Chemistry
ISSN0304-4203
1997
卷号59期号:2页码:113-126
关键词Trace Metals Copper Estuarine Solvent Extraction Interference Gfaas Complexation
通讯作者D. J. Mackey
英文摘要We have found that a commonly used complexation and solvent extraction technique (using mixed dithiocarbamates/Freon/HNO3) does not always extract Cd, Co, Cu and Ni from estuarine samples with the same efficiency as from Milli-Q water. For samples collected from the Derwent Estuary (Australia), the reduced extraction efficiency only occurred for unfiltered samples, but low extraction efficiencies were also observed for a (filtered) riverine certified reference material (SLRS-3) suggesting that the effect may be widespread. We have not been able to identify the reason for the low extraction efficiency and, although it is strongly correlated with the presence of high concentrations of suspended solids, dissolved organic matter and particulate iron, we have no experimental evidence to directly link any of these parameters to the effect. It is possible that similar effects may occur in other techniques which rely on a preconcentration step prior to analysis and that some literature values of heavy metals in estuarine waters may be low. We propose a modification of the standard complexation/solvent extraction method which overcomes these difficulties without adding significantly to the time taken for analyses.
语种英语
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/3065
专题科研共享资源
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GB/T 7714
D. J. Mackey,J. E. O'Sullivan,R. J. Watson and G. Dal Pont. Interference effects in the extraction of trace metals from estuarine waters[J]. Marine Chemistry,1997,59(2):113-126.
APA D. J. Mackey,J. E. O'Sullivan,&R. J. Watson and G. Dal Pont.(1997).Interference effects in the extraction of trace metals from estuarine waters.Marine Chemistry,59(2),113-126.
MLA D. J. Mackey,et al."Interference effects in the extraction of trace metals from estuarine waters".Marine Chemistry 59.2(1997):113-126.
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