Determination of total phosphorus in lake sediment

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2012-06-14
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Ostrofsky, Milton L.
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Keywords
Total phosphorus , methods , Sediments
Abstract
Several methods are in use to measure total phosphorus in lake sediments making cross-study comparisons tenuous, and may lead to potential errors in calculating other phosphorus fractions. Four methods in common use in the limnological literature were compared using sediments spanning a range of organic content from 2 to 35% C. No significant differences were found in within-lake comparisons, although a method using persulfate oxidation was highly variable, and this variability was correlated with organic content suggesting inconsistent oxidation. The other methods (combustion, acid digestion with HClO4, H2SO4 + H2O2) gave uniformly small variances.
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Biology
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Ostrofsky, M.L. (2012). Determination of total phosphorus in lake sediments. Hyrdrobiologia 696: 199-203. doi: 10.1007/s10750-012-1208-8
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Springer Science+Business Media
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