Assessing Total Nitrogen in Surface-Water Samples?Precision and Bias of Analytical and Computational Methods

U.S. Department Of The Interior

ISBN 10: 149748555X / ISBN 13: 9781497485556

Edité par CreateSpace Independent Publishing Platform, 2014

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N° de réf. du vendeur I-9781497485556

Détails bibliographiques

• Titre: Assessing Total Nitrogen in Surface-Water Samples?Precision and Bias of Analytical and Computational Methods
• Éditeur: CreateSpace Independent Publishing Platform
• Date de parution: 2014
• Langue: anglais
• ISBN à 10 chiffres: 149748555X
• ISBN à 13 chiffres: 9781497485556
• Reliure: Couverture souple
• État de l'article: New

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Synopsis

The characterization of total-nitrogen (TN) concentrations is an important component of many surface-waterquality programs. However, three widely used methods for the determination of total nitrogen—(1) derived from the alkaline-persulfate digestion of whole-water samples (TN-A); (2) calculated as the sum of total Kjeldahl nitrogen and dissolved nitrate plus nitrite (TN-K); and (3) calculated as the sum of dissolved nitrogen and particulate nitrogen (TN-C)— all include inherent limitations. A digestion process is intended to convert multiple species of nitrogen that are present in the sample into one measureable species, but this process may introduce bias.