A distillation step has been incorporated into the automated determination of ammonia by the indophenol method.
By this means the application of the method has been extended, and interference from metal ions and the need for dialysis of turbid solutions have been eliminated. The reliability of the method has been improved without loss of speed.
J. Keay and P. M. A. Menage, Analyst, 1969, 94, 895 DOI: 10.1039/AN9699400895
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