| Assessing Total Nitrogen in Surface-Water Samples?Precision and Bias of Analytical and Computational Methods Contributor(s): U. S. Department of the Interior (Author) |
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ISBN: 149748555X ISBN-13: 9781497485556 Publisher: Createspace Independent Publishing Platform OUR PRICE: $16.14 Product Type: Paperback Published: April 2014 |
| Additional Information |
| BISAC Categories: - Reference |
| Physical Information: 0.1" H x 8.5" W x 11.02" (0.29 lbs) 46 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: 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. |