Interferences by Organic Nitrogen Compounds in Ammonium-N Determination


	Pakistan Journal of Biological Sciences
	Year: 1999 \| Volume: 2 \| Issue: 3 \| Page No.: 820-825 DOI: 10.3923/pjbs.1999.820.825

Interferences by Organic Nitrogen Compounds in Ammonium-N Determination

Muhammad Ayyaz Khan and T.H. Flower

Abstract: Organic nitrogen compounds were evaluated for interferences in NH₄-N determination in water, 2M KCl and 0.5M K₂SO₄ at NH₄-N level of 0 and 1.0 mg l^-1. The results revealed that organic nitrogen compounds interfere negatively in NH₄-N determination using the Technicon AutoAnalyzer II. Soil extracting solutions like 2M KCl and 0.5M K₂SO₄ further increased interferences by these compounds. These results suggested that a pre-treatment step either distillation or gas phase dialysis should be included to reduce the interferences caused by the organic nitrogen compounds in the NH₄-N determination by the Technicon AutoAnalyzer II.

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How to cite this article:

Muhammad Ayyaz Khan and T.H. Flower , 1999. Interferences by Organic Nitrogen Compounds in Ammonium-N Determination . Pakistan Journal of Biological Sciences, 2: 820-825.

DOI: 10.3923/pjbs.1999.820.825

URL: https://scialert.net/abstract/?doi=pjbs.1999.820.825

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