New Zealand Journal of Marine and Freshwater Research abstracts

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DETERMINATION OF TOTAL DISSOLVED PHOSPHORUS IN NEW ZEALAND FRESH WATERS (NOTE)

Christine Finlayson

Ecology Division, Department of Scientific and
Industrial Research, P.O. Box 30466,
Lower Hutt, New Zealand

Abstract Ultraviolet digestion was found to be simpler and more convenient than perchloric acid digestion in the determination of total dissolved phosphorus in a variety of New Zealand freshwaters, but had limitations when used on waters with a high humic acid content. Perchloric acid digestion was more powerful, breaking down polyphosphate bonds not affected by ultraviolet, but was subject to phosphorus losses from "bumping" during evaporation to dryness.

N.Z. Journal of Marine and Freshwater Research 9 (1) : 113-17.
(Received for publication 2 November 1973)

PDF file of entire paper: medium quality (253K); (scanned from paper original: notes about this process)

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