Aliphatic and polycyclic aromatic hydrocarbons (PAHs) in soils of the northwest Qinling Mountains: Patterns, potential risk and an appraisal of the PAH ratios to infer their source
Aliphatic and polycyclic aromatic hydrocarbons (PAHs) in soils of the northwest Qinling Mountains: Patterns, potential risk and an appraisal of the PAH ratios to infer their source
复制标题
西北秦岭土壤中脂肪族和多环芳烃（PAH）：模式、潜在风险和 PAH 比率评估以推断其来源
DOI：
10.1080/10934529.2016.1258865
复制
发表时间：
2017-03
期刊：
影响因子：
--
通讯作者：
Xiaohuan Hou
中科院分区：
文献类型：
--
作者：
Yanqing Xia;Tianzhu Lei;Chuntao Tian;Xiaohuan Hou
ABSTRACT Surface soils from the tourist areas of the northwest Qinling Mountains were analyzed to determine the concentrations, probable sources and potential risks of hydrocarbons. Concentrations of aliphatic and aromatic hydrocarbons ranged from 4.18 to 3240 ng g−1 and 0.0462 to 101 ng g−1 dry weight, respectively. The extent of soil contamination by hydrocarbons was generally typified by unpolluted to slightly polluted levels. The incremental lifetime cancer risks (ILCRs) for exposure to soil-borne PAHs indicated complete safety for tourists. Early diagenesis of natural products, bacteria activities and petroleum were the three main sources of aliphatic hydrocarbons, while the transport of air pollutants from pyrolytic processes was the main origin of PAHs. Because the photochemical reaction of PAHs in the atmosphere would produce lower ratios for Ant/(Ant + Phe), BaA/(BaA + Chr) and IcdP/(IcdP + BghiP), but a higher ratio for Fla/(Fla + Pyr), the source classification highly depended on the diagnostic ratios chosen. The plot of ΣCOM/Σ13PAH vs. ΣLMW/ΣHMWPAH provide additional information to distinguish the origins of PAHs, and it showed a cluster of pyrogenic sources except for sample JFS-8. Four sources were resolved by principal component analysis: (1) a low temperature pyrogenic process related to the use of fossil fuel and biomass, such as charcoal, straw and wood, which contributes 63.1% of the measured PAHs; (2) the potential contribution of diagenetic processes, contributing 18.4%; (3) traffic emissions, contributing 9.27%; and (4) bioconversion/bacterial action, contributing 5.82%. Additionally, there was a good exponential relationship (r2 = 0.969) between the natural n-alkanes ratio (NAR) and carbon preference index for C23–C35 (CPI23–35) for all samples, which is of great use for the determination of the origins of aliphatic hydrocarbon.
登录
查看更多内容
影响因子：
0.7
作者：
C. G. Blanco;R. Prego;M. Azpíroz;I. Fernández-Domínguez
通讯作者：
C. G. Blanco;R. Prego;M. Azpíroz;I. Fernández-Domínguez
影响因子：
11.4
作者：
Uwayemi M. Sofowote;B. McCarry;C. Marvin
通讯作者：
Uwayemi M. Sofowote;B. McCarry;C. Marvin
影响因子：
0.7
作者：
C. G. Blanco;R. Prego;M. Azpíroz;I. Fernández-Domínguez
通讯作者：
C. G. Blanco;R. Prego;M. Azpíroz;I. Fernández-Domínguez
影响因子：
9.8
作者：
Wang, Xue-Tong;Miao, Yi;Yu, Gang
通讯作者：
Yu, Gang
影响因子：
2
作者：
Xiao-ning Lei;Weiwei Li;Jianjiang Lu;Yanbin Tong;Shanman Li
通讯作者：
Xiao-ning Lei;Weiwei Li;Jianjiang Lu;Yanbin Tong;Shanman Li