Abstract
It is shown that sorption of orthophosphate to iron compounds, formed during persulfate digestion, can cause a significant underestimation of total dissolved phosphorus in interstitial waters rich in iron and poor in phosphorus. Labelling the samples with carrier free32PO4 before digestion allows to correct for these losses.
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Gächter, R., Tessier, A., Szabo, E. et al. Measurement of total dissolved phosphorus in small volumes of iron rich interstitial water. Aquatic Science 54, 1–9 (1992). https://doi.org/10.1007/BF00877261
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DOI: https://doi.org/10.1007/BF00877261