Comparative study of magnesium nitrate, palladium nitrate and reduced palladium for the direct determination of mercury in sea water by electrothermal atomization atomic absorption spectrometry
作者： Pilar Bermejo-Barrera , Jorge Moreda-Pi�eiro , Antonio Moreda-Pi�eiro , Adela Bermejo-Barrera
DOI: 10.1007/BF01244963
关键词: Atomic absorption spectroscopy 、 Environmental chemistry 、 Ascorbic acid 、 Seawater 、 Palladium 、 Graphite furnace atomic absorption 、 Inorganic chemistry 、 Salinity 、 Chemistry 、 Mercury (element) 、 Magnesium nitrate
摘要: A comparative study of different chemical modifiers in graphite furnace atomic absorption spectrometry for the direct determination mercury sea water samples, synthetic sample high (72.8%) and low 34.2%) salinity aqueous solutions, was carried out. The use reduced palladium produces better results. mixture nitrate ascorbic acid, gives best limit detection (1.9 μgl−1). magnesium produced excellent recoveries (close to 100%) whole range all concentration tested. alone or combined with gave good respect a real salinities. interference from major components were completely removed by using modifiers. Thus, single calibration curve may be applied analysis samples widely differing
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