A simple and rapid method for the calorimetric determination of total nitrogen in coal has been tested on several coals digested under various conditions. The method consists of initial carbonization of the coal sample with H,SO, followed by digestion using continuous-flow addition of a mixture of 5
Rapid method for the simultaneous determination of total chlorine and nitrogen in coal
โ Scribed by Jitendra N. Chakrabarti
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 200 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0016-2361
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โฆ Synopsis
A rapid method for the simultaneous determination of total chlorine and nitrogen in coal has been developed. The nitrogen isestimated in the usual way and the chlorine is absorbed in alkaline hydrogen peroxide and estimated gravimetrically.
It is found that the time taken for both the determinations is much less than that for separate determinations as prescribed by standard methods, while the results are in close agreement with those from the standard methods.
'1,
๐ SIMILAR VOLUMES
calculntion of the results wns kindly cnrried out for us by Dr. J. 0. Irwin. He finds thnt 1 mg. of nscorbic ncid in the dried cnbbage as determined chemicnlly is biologicnily equivnlent to 144 mg. of nscorbic ncitl, Le., the potency rntio = 1 e0.1. The fiducinl limits corresponding to P = 0-95 nrc
A novel method has been developed for the photometric determination of nitrogen oxides (NO,; NO and NO, gases). The sample .gas is shaken with an NaOH-alkaline H20, solution in a container so that all the NO, is converted to the NO; form. After decomposition of the H,O, by heating, the colour is dev