GC/MS and FTIR Analyses of the Extracts from an Indonesia Natural Asphalt
An Indonesia natural asphalt was ultrasonically extracted with acetone and carbon disulfide to afford acetone-soluble fraction (F1), carbon disulfide-soluble fraction (F2) and residue (i.e., carbon disulfide-insoluble fraction, R2). F1 was analyzed with GC/MS and all the fractions were analyzed with FTIR. The results show that F1 is rich in hetero atomic compounds (HACs), 2-methyl alkanes (2-MAs) and phthalic acid esters (PAEs). The 2-MAs are a class of important biomarkers, in which the main peak carbons are C24 and C18. According to the proximate analyse, there is a sharply high content of ash (42.62%), which could be responsible for the increase in the yields of R2 in the natural asphalt. By FTIR analysis, the nitrogen- and oxygen-containing compounds, branched alkanes and esters (or lactones, etc.) are important components for the Indonesia natural asphalt.
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
T. Yao et al., "GC/MS and FTIR Analyses of the Extracts from an Indonesia Natural Asphalt", Advanced Materials Research, Vols. 236-238, pp. 562-570, 2011