Determination of total dissolved phosphorus in New Zealand fresh waters (note) |
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| Authors: | Christine Finlayson |
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| Affiliation: | Ecology Division, Department of Scientific and Industrial Research , P.O. Box 30466, Lower Hutt, New Zealand |
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| 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. |
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| Keywords: | Mustelus lenticulatus Pegasus Bay Lyttelton catch composition reproduction |
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