Semi-Micro Determination of Ammonia in Water by the Rubazoic Acid Method
Authors:
- 1 October 1993
- journal article
- research article
- Published by Taylor & Francis in International Journal of Environmental Analytical Chemistry
- Vol. 53 (3) , 243-248
Abstract
A simplified rubazoic acid method for the determination of ammonia on a semi-micro scale is described. The absorbance of a pink-violet aqueous solution of rubazoic acid is measured at 550 nm. The method can be directly applied to fresh waters with NH4 +-N concentrations of between 20 and 1000 μg. 1−1 The semi-micro method was compared with the original extraction rubazoic acid method of Procházková (1964) and the results showed good agreement (R2 = 0.98, n = 25). The direct nesslerization method gave significant overestimatesKeywords
This publication has 3 references indexed in Scilit:
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- The Direct Estimation of Ammonia in Sea Water with Notes on "Reactive" Iron, Nitrate, and Inorganic PhosphorusICES Journal of Marine Science, 1959
- Colorimetric Determination of Ammonia and CyanateAnalytical Chemistry, 1953