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- W209347079 abstract "Abstract : Mercury in soils and sediments can be accurately determined over the concentration range of 0.04 to 2 micrograms Hg/g using amalgamation on thin gold films. Relative standard deviation of analysis is about 10%. A mild sample dissolution technique, involving HNO3 at 75 C, produced quantitative Hg recoveries for certified sediment samples and recoveries equivalent to those of rigorous Parr-bomb digestions for other soil and sediment samples. Oven drying of samples at 150 C resulted in significant losses of Hg from both soil and sediment samples. Air drying, oven drying at 60 C or freeze drying resulted in Hg recoveries that agreed within 20% of those for undried samples. Thus, any one of these three comparable methods is recommended for Hg determinations in soils and sediments. Keywords: Chemical analysis; Volatilization." @default.
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- W209347079 date "1985-09-01" @default.
- W209347079 modified "2023-09-24" @default.
- W209347079 title "Sample digestion and drying techniques for optimal recovery of mercury from soils and sediments" @default.
- W209347079 hasPublicationYear "1985" @default.
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