Polycyclic Aromatic Hydrocarbons from Candiota (South Brazilian) Coal Extracts |
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| Authors: | Pedro José Sanches Filho Vera Regina Pereira Nogueira Laíza Canielas Krause Maria Regina Alves Rodrigues Maria do Carmo Ruaro Peralba Elina Bastos Caramão |
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| Affiliation: | 1. Escola Técnica Federal de Pelotas , Pelotas, RS, Brazil;2. Universidade Federal de Pelotas , Pelotas, RS, Brazil;3. Universidade Federal do Rio Grande do Sul , Porto Alegre, RS, Brazil |
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| Abstract: | The bitumen composition of Candiota coal (south Brazil) was investigated. Coal bitumen was produced by Soxhlet extraction using toluene. Two chromatographic techniques were tested for bitumen fractionation: adsorption liquid chromatography on silica (ALCS) and adsorption liquid chromatography on alumina (ALCA). Results were compared in terms of the quality and quantity of hydrocarbons isolated. Several linear saturated hydrocarbons were found in the range of 14 to 33 carbons. Pyrene, chrysene, and other polycyclic hydrocarbons with recognized mutagenic and carcinogenic properties were found in the aromatic fractions. Chromatographic methodology using alumina shows better results in the fractionation of bitumen. |
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| Keywords: | Coal Polycyclic Aromatic Hydrocarbons Soxhlet Extraction |
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