Nitrate and Organic N Analyses with Second-Derivative Spectroscopy
نویسندگان
چکیده
Simple and reliable procedures have been developed for analyses of N03 , total N, and organic N in fresh waters. N03is determined by second-derivative UV spectroscopy. Total N and organic N are determined based on secondderivative analyses of N03following persulfate digestion. Resolution of organic N determinations was increased by using ion-exchange resins to remove N03from samples with high concentrations of N03 prior to persulfate oxidation of the organic N.
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