Thermal-desorption gas chromatographic procedure for screening coal fly ash for volatile organic compounds

✍ Scribed by C.E. Higgins; W.H. Griest; J.E. Caton; S.H. Harmon

• Book ID: 102980044
• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 534 KB
• Volume: 154
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(83)80017-8

✦ Synopsis

Thermal desorption of coal fly ash in a flowing stream of helium liberates volatile compounds which are collected on Tenax resin. A chemical "fingerprint" of these components collected from the fly ash is obtained by using thermal desorption of the material collected on the Tenax resin and capillarycolumn gas chromatography. Compounds ranging in volatility from that of benzene (b.p. 80°C) through C,-phenanthrene (b.p. ca. 360°C) are detected, but recoveries of components only through naphthalene (b.p. 218°C) are suitable for quantitative work. The method provides chemical information on volatile organic compounds complementary to that achieved by procedures based on solvent extraction.