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Total Nitrogen Determination by a Spectrophotometric Method
Being able to measure total nitrogen (TN) is important for following the nitrogen budget. In this chapter, we present the spectrophotometric method we use for determining TN. The method relies on oxidation and reduction steps, involving persulfate digestion of nitrogen compounds into nitrate followed by spectrophotometric determination.
KeywordsNutrient uptake Total nitrogen
- 1.Grasshoff K, Ehrhardt M, Kremling K (1999) Methods of seawater analysis. Wiley-VCH Verlag Gmbh, WeinheimGoogle Scholar
- 2.Schnetger B, Lehners C (2014) Determination of nitrate plus nitrite in small volume marine water samples using vanadium(III)chloride as a reduction agent. Mar Chem 160:91–98Google Scholar
- 3.Koroleff F (1979) Methods for the chemical analysis for seawater. Meri 7:1–60. (in Finnish)Google Scholar