A comparative study of the Gunning-Arnold and Winkler boric acid modifications of the Kjeldahl Method for the determination of nitrogen
โ Scribed by K.S. Markley; Raymond M. Hann
- Publisher
- Elsevier Science
- Year
- 1925
- Tongue
- English
- Weight
- 71 KB
- Volume
- 200
- Category
- Article
- ISSN
- 0016-0032
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โฆ Synopsis
The mercuric chloride, zinc chloride, cadmium bromide, and cadmium chloride 2 :I addition compounds were prepared and analyzed.
The presence of the metals did not adversely affect the nitrogen results as determined by the official method.
๐ SIMILAR VOLUMES
The determination of nitrogen in nitro, nitroso, and azo compounds by the direct application of Kieldahl's method leads to low results, particularly when the content of nitrogen attached to oxygen exceeds lOยฐ/o 1 . Many reagents have, therefore, been suggested for reduction of these types of nitroge
## Abstract A process is described for the use of titanium dioxide as a catalyst in the Kjeldahl determination of total nitrogen, in the place of the efficient, but highly toxic mercuric oxide. The titanium dioxide is incorporated into a catalyst mixture with cupric sulphate and potassium sulphate