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Publication Information

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Title: An improved method of chemical analysis for low levels of nitrogen in forest streams or in rainwater.

Author: Holcombe, Elly E.; Moore, Duane G.; Fredriksen, Richard L.;

Date: 1986

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)

Description: A 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.

Keywords: Chemical analysis, nitrogen, water analysis, laboratory methods

Publication Notes:

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  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
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Holcombe, 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

 


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