Sulphuric-perchloric acid digestion of plant material for nitrogen determination
✍ Scribed by T. Batey; M.S. Cresser; I.R. Willett
- Book ID
- 108304880
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 208 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0003-2670
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## Abstract The micro‐determination of nitrogen described is based on a preliminary digestion with sulphuric acid, potassium sulphate and selenium, followed by a direct assay of ammonia in the resultant solution by a phenol‐hypochlorite colorimetric method, without previous liberation and distillat
3GcJ ANALYTICA CHIhlICA ACTA I-amino -5naphthol-4-sulfonic acid (0.0640/;,) reagents were prepared as clescrilxcl by SPEI~RY:~. Pyrex tubes 25 x 200 mm and cold fingers of the appropriate size (Fig. I) wcrc used for the digestion of the samples.