Authors: Jianwei Liu, Faraz Ahmad, Qian Zhang, Litong Liang, Wei Huang, Zeyu Peng, Quan Yuan, Xinning Xiang Abstract Coal tar is considered a valuable product obtained from coal pyrolysis. An accurate and convenient analytical study on its composition would be of great significance for its further processing and utilization. This work focused on the group-type …
Authors: Maurus Biedermann, Celine Munoz, Koni Grob Abstract On-line coupled high performance liquid chromatography-gas chromatography-flame ionization detection (HPLC-GC-FID) used for determining mineral oil aromatic hydrocarbons (MOAH) in foods, particularly in certain oils and fats, may be disturbed by interfering olefins present as natural food components or resulting from raffination of the oils and fats. While …
Epoxidation for the analysis of the mineral oil aromatic hydrocarbons in food. An update Read More »
Authors: Xianming Zhang, Matthew Robson, Karl Jobst, MirenPena-Abaurrea, Alina Muscalu, Sri Chaudhuri, Chris Marvin, Ian D. Brindle, Eric J.Reiner, PaulHelm Abstract Passive samplers are useful tools for monitoring hydrophobic, persistent, and potentially bioaccumulative contaminants in the environment. In this study, low density polyethylene passive samplers were deployed in urban-influenced and background nearshore freshwaters of northwestern …
Authors: Shujing Li, Yaxi Hu, Wei Liu, Ying Chen, Fei Wang, Xiaonan Lu, Wenjie Zheng Abstract Orange juice is one of the most consumed fruit juices worldwide and its adulteration has been a long-lasting concern. In this study, an untargeted volatile metabolomics using a comprehensive two-dimensional gas chromatography-quadrupole mass spectrometry (GC × GC-qMS) was developed to systematically …
Authors: Wenbin Li, Yongfeng Zhu, Shuirong Li, Yi Lu, Jida Wang, Keming Zhu, Jinlei Chen, Yunwu Zheng, Zhifeng Zheng Abstract Analytical pyrolysis-comprehensive two-dimensional gas chromatography/mass spectrometry (Py-GC × GC/MS) was employed for the on-line analysis of cellulose via catalytic pyrolysis with different catalysts and catalytic temperatures to study the products and aromatic hydrocarbons selectivity. The catalysts were …
Authors: Yunwu Zheng, Jida Wang, Can Liu, Yi Lu, Xu Lin, Wenbin Li, Zhifeng Zheng Abstract The main objective of the present work is to investigate the influence of nickel to cerium ratio on hydrogen exchanged Zeolite Socony Mobil-5 (HZSM-5) towards the catalytic upgrading of pine derived oxygenated pyrolysis vapours into aromatic hydrocarbon and phenol …
Authors: Ruixin Xu, Mohammed S. Alam, Christopher Stark, Roy M. Harrison Abstract Particulate matter originated from traffic has attracted major interest over the last few years. The semi-volatile organic component of the particles may evaporate with dispersion away from the emission source, creating vapour which may oxidise to form secondary organic aerosol. Air samples were …
Authors: Pierluigi Delmonte, Xabier Belaunzaran, Clark D. Ridge, Noelia Aldai, John K.G. Kramer Abstract The complexity of determining the composition of animal tissue lipids is greatly increased by the presence of plasmalogens in which the alkyl chain is linked to glycerol by an enol ether bond instead of being esterified. Acidic methanolysis of animal tissue …
Authors: Ayobami Salami, Teemu Vilppo, Sari Pitkänen, Janne Weisell, Kaisa Raninen, Jouko Vepsäläinen, Reijo Lappalainen Abstract This study focused on wood extractives by a slow pyrolysis thermal extraction technique and screening of potentially valuable compounds from three African trees: Lophira lanceolata Tiegh. ex Keay., Dialium guineense Willd. and Afzelia africana Sm. The primary objective of the thermal treatment was biochar production …
Authors: Ayobami Salami, Teemu Vilppo, Sari Pitkänen, Janne Weisell, Kaisa Raninen, Jouko Vepsäläinen, Reijo Lappalainen Abstract In this study, the initial reaction of lignin pyrolysis was explored in depth with light gas emission combined with liquid bio-oil composition and physical-chemical structure of solid bio-char. The result reveals that lignin pyrolysis undergoes a complex initial reaction …
Comprehensive mechanism of initial stage for lignin pyrolysis Read More »
