Please use this identifier to cite or link to this item: https://doi.org/10.1080/00032710902807797
Title: Determination of total nitrogen in environmental samples: Validation by comparison of techniques and intralaboratory studies
Authors: Karthikeyan, S. 
He, J. 
Joshi, U.M.
Balasubramanian, R. 
Keywords: Eutrophication
Flow injection
Flux
Intralaboratory
Total nitrogen
Issue Date: Jan-2009
Citation: Karthikeyan, S., He, J., Joshi, U.M., Balasubramanian, R. (2009-01). Determination of total nitrogen in environmental samples: Validation by comparison of techniques and intralaboratory studies. Analytical Letters 42 (7) : 948-957. ScholarBank@NUS Repository. https://doi.org/10.1080/00032710902807797
Abstract: A rapid, microwave-based extraction method was employed to oxidize all forms of nitrogen to nitrate in environmental samples using persulfate. The digest was then analyzed spectrophotometrically after an offline reduction of nitrate to nitrite using a cadmium reductor column was completed. The precision of the method was tested at the 0.5 mg l-1 level and was 5.2% (N = 10). The detection limit based on S/N = 3 was calculated to be 0.15 mg l-1. The method was thoroughly validated by comparison of analytical techniques and intralaboratory comparison studies. © Taylor & Francis Group, LLC.
Source Title: Analytical Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/84561
ISSN: 00032719
DOI: 10.1080/00032710902807797
Appears in Collections:Staff Publications

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