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An improved method of chemical analysis for low levels of nitrogen in forest streams or in rainwater.Author(s): Elly E. Holcombe; Duane G. Moore; Richard L. Fredriksen
Source: Res. Note. PNW-RN-449. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 12 p
Publication Series: Research Note (RN)
Station: Pacific Northwest Research Station
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DescriptionA modification of the macro-Kjeldahl method that provides increased sensitivity was developed for determining very low levels of nitrogen in forest streams and in rain-water. The method is suitable as a routine laboratory procedure. Analytical range of the method is 0.02 to 1.5 mg/L with high recovery and excellent precision and ac-curacy. The range can be increased to include higher levels of nitrogen by dilution of samples at time of Nesslerization, or by using smaller volumes of samples at the start of the analysis.
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CitationHolcombe, Elly E.; Moore, Duane G.; Fredriksen, Richard L. 1986. An improved method of chemical analysis for low levels of nitrogen in forest streams or in rainwater. Res. Note. PNW-RN-449. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 12 p
KeywordsChemical analysis, nitrogen, water analysis, laboratory methods
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