A new method for evaluating the rank of coal from thermogravimetric curves: the identification of coal and soot isolated from pnuemoconiotic lungs
✍ Scribed by I. Bergman
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 817 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0016-2361
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✦ Synopsis
Thermogravimetric studies have been carried out on residues prepared from the lungs of pneumcconiotic coal miners. These residues, isolated by digestion of formalin-fixed tissue in acetic acid, have been compared thermogravimetrically with similarly treated powders of respirable size prepared from coals of various rank, and from various forms of soot. A new method of evaluating the rank of coal from the thermograms has been developed.
In general, there was a significant correlation between the results for residues isolated from pneumoconiotic lungs and the industrial histories.
In some cases, however, the residues were found to be of unexpectedly high rank, and electron microscopy confirmed that these residues contained a large proportion of soot. The source of the soot is believed to be the 'naked lights' formerly used in some pits.