Nitrate and organic N analyses with second‐derivative spectroscopy | Zendy

Crumpton William G. | Zendy; Isenhart Thomas M. | Zendy; Mitchell Paul D. | Zendy

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Nitrate and organic N analyses with second‐derivative spectroscopy

Author(s) -

Crumpton William G.,

Isenhart Thomas M.,

Mitchell Paul D.

Publication year - 1992

Publication title -

limnology and oceanography

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.7

H-Index - 197

eISSN - 1939-5590

pISSN - 0024-3590

DOI - 10.4319/lo.1992.37.4.0907

Subject(s) - persulfate , derivative (finance) , chemistry , nitrate , environmental chemistry , spectroscopy , organic matter , organic chemistry , catalysis , physics , quantum mechanics , financial economics , economics

Simple and reliable procedures have been developed for analyses of NO 3 − , total N, and organic N in freshwaters. NO 3 − is determined by second‐derivative UV spectroscopy. Total N and organic N are determined based on second‐derivative analyses of NO 3 − following persulfate digestion. Resolution of organic N determinations was increased by using ion‐exchange resins to remove NO 3 − from samples with high concentrations of NO 3 − prior to persulfate oxidation of the organic N.

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