|
| << previous | next >> |
Journal description
All volumes of the corresponding journal
All issues of the corresponding volume
All articles of the corresponding issues
Details for article 10 of 189 found articles
| Title: |
An aluminum block digestion procedure for determination of total N in soils containing 15N |
| Author: |
Stumpe, J. M. Christianson, C. B. Buresh, R. J. |
| Appeared in: |
Communications in soil science and plant analysis |
| Paging: | Volume 16 (1985) nr. 1 pages 1-14 |
| Year: |
1985-01 |
| Contents: |
A commonly used macro-Kjeldahl digestion method for the determination of total N in soils containing N was modified for use with an electrically heated aluminum block containing 250-ml volumetric tubes. The method was shown to recover quantitatively the 15N added to soil as NO3-, NO2-, and plant material. When similar size soil samples were digested, the means and coefficients of variation for total soil N and 15N recovery were comparable for this method and a macro-Kjeldahl method employing 300-ml flasks with electrically heated digestion stands. The method is intended as an alternative for laboratories that desire to minimize sampling error by use of a macro-Kjeldahl rather than a micro-Kjeldahl digestion but do not have suitable macro-Kjeldahl digestion stands and flasks for analysis of N-labeled soils. The electrically heated aluminum block results in uniform heating of digests, conservation of laboratory space, and ease of handling of samples when compared with ordinary macro-Kjeldahl equipment. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 10 of 189 found articles
| << previous | next >> |