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- Autorius: U S Department of the Interior
- Leidėjas: CreateSpace Independent Publishing Platform
- Metai: 2014
- Puslapiai: 46
- ISBN-10: 149748555X
- ISBN-13: 9781497485556
- Formatas: 21.6 x 28 x 0.3 cm, minkšti viršeliai
- Kalba: Anglų
Assessing Total Nitrogen in Surface-Water Samples?Precision and Bias of Analytical and Computational Methods (el. knyga) (skaityta knyga) | knygos.lt
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Aprašymas
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.
- Autorius: U S Department of the Interior
- Leidėjas: CreateSpace Independent Publishing Platform
- Metai: 2014
- Puslapiai: 46
- ISBN-10: 149748555X
- ISBN-13: 9781497485556
- Formatas: 21.6 x 28 x 0.3 cm, minkšti viršeliai
- Kalba: Anglų
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.
Atsiliepimai