## Abstract The total nitrogen content of plant tissue may be determined by direct nesslerization of sulphuric acidβhydrogen peroxide digests with accuracy up to 5%. Similar application to soil extracts involves somewhat greater errors. In a spectrophotometric study of the Nessler colour, a filter
Determination of nitrogen in soil and plant materials: Use of boric acid in the micro-kjeldahl method
β Scribed by S. H. Yuen; A. G. Pollard
- Publisher
- John Wiley and Sons
- Year
- 1953
- Tongue
- English
- Weight
- 589 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0022-5142
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π SIMILAR VOLUMES
A procedure for tbe automated determmatron of sod and plant nitrogen from Neldahl digests has been proposed The contmuous flow system mvolved the use of a unique mxrodBtdlatlon unit followed by colounmetnc detection of the pure ammomum chlonde dlstdlate Optmnsatlon of the mdophenol reaction IS shown
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 lOΒ°/o 1 . Many reagents have, therefore, been suggested for reduction of these types of nitroge