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A procedure for the simultaneous determination of Total N and Total P in freshwater using persulphate microwave digestion.

Johnes, P. J. and Heathwaite, A. Louise (1992) A procedure for the simultaneous determination of Total N and Total P in freshwater using persulphate microwave digestion. Water Research, 26 (10). pp. 1281-1285.

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Abstract

In the absence of a suitable method for routine analysis of large numbers of natural river water samples for organic nitrogen and phosphorus fractions, a new simultaneous digestion technique was developed, based on a standard persulphate digestion procedure. This allows rapid analysis of river, lake and groundwater samples from a range of environments for total nitrogen and phosphorus. The method was evaluated using a range of organic nitrogen and phosphorus structures tested at low, mid and high range concentrations from 2 to 50 mg l−1 nitrogen and 0.2 to 10 mg l−1 phosphorus. Mean recoveries for nitrogen ranged from 94.5% (2 mg l−1) to 92.7% (50 mg l−1) and for phosphorus were 98.2% (0.2 mg l−1) to 100.2% (10 mg l−1). The method is precise in its ability to reproduce results from replicate digestions, and robust in its ability to handle a variety of natural water samples in the pH range 5–8

Item Type: Article
Journal or Publication Title: Water Research
Additional Information: A procedure for the simultaneous determination of Total N and Total P in freshwaters using persulphate microwave digestion. 1 cites: http://scholar.google.com/scholar?num=100&hl=en&lr=&cites=1260981972087475959
Uncontrolled Keywords: total nitrogen ; total phosphorus ; freshwater ; water quality ; simultaneous digestion ; persulphate oxidation ; microwave digestion unit ; autoanalyser
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 49799
Deposited By: ep_importer_pure
Deposited On: 19 Sep 2011 13:37
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 19:32
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/49799

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