Minor and trace metal analysis of a solvent-refined coal by flameless atomic absorption

✍ Scribed by William M. Coleman; Peggy Szabo; David L. Wooton; Harry C. Dorn; Larry T. Taylor

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 454 KB
• Volume: 56
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(77)90145-4

✦ Synopsis

Solvent-refined coal (SRC), THFrinsoluble SRC, THF-soluble SRC and three of its 'sizeseparated' fractions have been analysed for eleven metallic elements via flameless atomic absorption spectroscopy. Prior to analysis each sample was wet ashed with equal quantities of concentrated H2SO4 and 30% H202. Matrix effects were compensated for by the method of standard additions and deuterium-arc background correction. Mg, Al, K and Fe were found in greatest concentration in all samples. The concentration of Pb and Cd was measurable only in THF-insoluble SRC.