典型烟煤中游离态母体及烷基多环芳烃的含量和组成特征

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 近岸生态与环境实验室

	典型烟煤中游离态母体及烷基多环芳烃的含量和组成特征
	孙溶 ; 陈颖军 ; 韩勇 ; 田崇囯 ; 李军 ; 张干
刊名	地球化学
	2017-07-26
卷号	46 期号:4 页码:358-366
关键词	PAHs extraction yield parent PAHs alkylated PAHs composition characteristic volatile matter content PAHs可抽提率母体多环芳烃烷基多环芳烃组成特征挥发分含量
ISSN号	0379-1726
其他题名	The concentration and composition characteristics of soluble parent and alkylated polycyclic aromatic hydrocarbons in typical bituminous coals
产权排序	(1) 中国科学院烟台海岸带研究所海岸带环境过程与生态修复重点实验室 ; (2) 中国科学院大学 ; (3) 同济大学环境科学与工程学院 ; (4) 中国科学院广州地球化学研究所有机地球化学国家重点实验室
文献子类	Article
英文摘要	Residential coal combustion (RCC) is the most important emission source of polycyclic aromatic hydrocarbons (PAHs) and black carbon (BC) in China. Their emission factors are obviously controlled by the geological maturity of coals, therefore they may be related with the concentration and composition of soluble PAHs in coals. Six types of bituminous coal differing in maturity were selected in this study to determine soluble PAHs by GC/MS after Soxhlet extraction with DCM solvent. Through analyzing 16 parent PAHs (pPAHs) and 16 alkylated PAHs (aPAHs), the paper discussed the relationship between the concentration and composition of PAHs and coal maturity. Moreover, it may be helpful to study the formation mechanism of PAHs and BC during RCC. The results show that: (1) the total PAH concentrations in the six tested coal types are within the range of 39.8~289.0 mg/kg,and the coals with a medium volatile material content on the dry and ash-free basis (V_(daf)) have higher PAHs than those V_(daf) bituminous coals with high and low volatile material contents. Various coals show a difference by seven times, which is similar to the trend of emission factors of PAHs and BC of RCC; (2) pPAHs concentrations are winthin the range of 8.3~58.4 mg/kg in the six coal types, with the highest value occurring in those coals with a V_(daf) range of 25.6%~30.5%. Their aPAHs are within the range of 31.4~236.5 mg/kg, with two peaks existing at V_(daf) values within the range of 25.6% and 35.5%, respectively; the concentrations of aPAHs are higher than those of pPAHs by four times on average. The similar ranges of PAHs concentrations in both raw coals and RCC smoke as well as higher alkylated PAHs than pPAHs, may illustrate the succession of PAHs in coal smoke from soluble compounds; (3) as for the composition, low-ringed compounds (2~3 rings) are dominated by pPAHs in coals with V_(daf) less than 25.6%, while middle-to high-ringed PAHs (4~6 rings) have dominatedly the concentrations at V_(daf) over 30%; the case is similar for aPAHs with respect to this similarity, in which 2~3-ringed compounds are the main part in bituminous coals with middle to high maturities, while 4-ringed compounds have the highest concentrations at V_(daf) of 30.5%~35.5%. This compositional trend of soluble PAHs reflects the evolution rule of geological maturity of coal chemical structure y, and it also explains, to some extent, the phenomenon of the highest emission factors of PAHs and BC for middle volatile bituminous coals during RCC.
WOS关键词	Geology
WOS研究方向	Geology ; 地质学
语种	中文
CSCD记录号	CSCD:6036900
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24261]
专题	烟台海岸带研究所_近岸生态与环境实验室
作者单位	1.中国科学院广州地球化学研究所有机地球化学国家重点实验室 2.中国科学院烟台海岸带研究所海岸带环境过程与生态修复重点实验室; 3.中国科学院大学; 4.同济大学环境科学与工程学院;
推荐引用方式 GB/T 7714	孙溶,陈颖军,韩勇,等. 典型烟煤中游离态母体及烷基多环芳烃的含量和组成特征[J]. 地球化学,2017,46(4):358-366.
APA	孙溶,陈颖军,韩勇,田崇囯,李军,&张干.(2017).典型烟煤中游离态母体及烷基多环芳烃的含量和组成特征.地球化学,46(4),358-366.
MLA	孙溶,et al."典型烟煤中游离态母体及烷基多环芳烃的含量和组成特征".地球化学 46.4(2017):358-366.