In:
International Journal of Analytical Chemistry, Hindawi Limited, Vol. 2017 ( 2017), p. 1-9
Abstract:
Componential analysis of extractives is important for better understanding the structure and utilization of biomass. In this investigation, wheat straw (WS) was extracted with petroleum ether (PE) and carbon disulfide (CS 2 ) sequentially, to afford extractable fractions E F P E and E F C S 2 , respectively. Detailed componential analyses of E F P E and E F C S 2 were carried out with Fourier transform infrared (FTIR) spectroscopy, gas chromatography/mass spectrometry (GC/MS), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), energy dispersive spectrometry (EDS), and electron probe microanalysis (EPMA). Total extractives were quantified 4.96% by weight compared to the initial WS sample. FTIR and GC/MS analyses results showed that PE was effective for the extraction of ketones and waxes derived compounds; meanwhile CS 2 preferred ketones and other species with higher degrees of unsaturation. Steroids were enriched into E F P E and E F C S 2 with considerable high relative contents, namely, 64.52% and 79.58%, respectively. XPS analysis showed that most of the C atoms in extractives were contained in the structures of C-C, C-COOR, and C-O. TEM-EDS and EPMA analyses were used to detect trace amount elements, such as Al, Si, P, S, Cl, and Ca atoms. Detailed characterization of extractable species from WS can provide more information on elucidation of extractives in biomass.
Type of Medium:
Online Resource
ISSN:
1687-8760
,
1687-8779
DOI:
10.1155/2017/7305682
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2017
detail.hit.zdb_id:
2494714-3
