Sampling and analytical methods for the determination of copper, cadmium, zinc, and nickel at the nanogram per liter level in sea water
作者： Kenneth W. Bruland , Robert P. Franks , George A. Knauer , John H. Martin
DOI: 10.1016/S0003-2670(01)83754-5
关键词: Zinc 、 Environmental chemistry 、 Detection limit 、 Extraction (chemistry) 、 Chemistry 、 Cadmium 、 Nickel 、 Atomic absorption spectroscopy 、 Copper 、 Chromatography 、 Seawater
摘要: Abstract Sea-water samples collected by a variety of clean sampling techniques yielded consistent results for copper, cadmium, zinc, and nickel, which implies that representative, uncontaminated were obtained. A dithiocarbamate extraction method coupled with atomic absorption spectrometry electrothermal atomization is described essentially 100% quantitative each the four metals studied, has lower blanks detection limits, yields better precision than previously published techniques. more precise accurate determination these in sea water at their natural ng l -1 concentration levels therefore possible. Samples analyzed this procedure on Chelex-100 showed similar cadmium zinc. Both copper nickel appeared to be inefficiently removed from Chelex-100. Comparison organic other pertinent investigations excellent agreement.
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