Identification of sources of polycyclic aromatic hydrocarbons based on concentrations in soils from two sides of the Himalayas between China and Nepal
Identification of sources of polycyclic aromatic hydrocarbons based on concentrations in soils from two sides of the Himalayas between China and Nepal
复制标题
基于中国和尼泊尔喜马拉雅山两侧土壤中多环芳烃的来源识别
DOI：
10.1016/j.envpol.2015.11.018
复制
发表时间：
2016
影响因子：
8.9
通讯作者：
Kang Shichang
中科院分区：
文献类型：
--
作者：
Luo Wei;Gao Jiajia;Bi Xiang;Xu Lan;Guo Junming;Zhang Qianggong;Romesh Kumar Y;Giesy John P;Kang Shichang
为了了解喜马拉雅山多环芳烃（PAHs）的分布和来源，根据海拔高度、土地利用以及多环芳烃从尼泊尔到中国青藏高原的风驱动可能的跨境迁移，在中国喜马拉雅山北坡（NSHC）和尼泊尔喜马拉雅山南坡（SSHN）采集了77个土壤样本。 SSHN 土壤的平均 PAH 浓度高于 NSHC 土壤。土壤中PAHs浓度较高的区域主要分布在主要道路附近以及农业和城市地区。 2-3环多环芳烃是喜马拉雅山土壤中含量最丰富的多环芳烃。挥发性PAHs浓度与海拔高度呈显着正相关。气团轨迹的模拟表明，土壤多环芳烃浓度的分布与季风的循环模式有关。交通和生物质或煤炭燃烧产生的多环芳烃排放极大地增加了喜马拉雅山土壤中多环芳烃的浓度。
To understand distribution and sources of polycyclic aromatic hydrocarbons (PAHs) in the Himalayas, 77 soil samples were collected from the northern side of the Himalayas, China (NSHC), and the southern side of the Himalayas, Nepal (SSHN), based on altitude, land use and possible trans-boundary transport of PAHs driven by wind from Nepal to the Tibetan Plateau, China. Soils from the SSHN had mean PAH concentration greater than those from the NSHC. Greater concentrations of PAHs in soils were mainly distributed near main roads and agricultural and urban areas. PAHs with 2–3 rings were the most abundant PAHs in the soils from the Himalayas. Concentrations of volatile PAHs were significantly and positively correlated with altitude. Simulations of trajectories of air masses indicated that distributions of soil PAH concentrations were associated with the cyclic patterns of the monsoon. PAH emissions from traffic and combustion of biomass or coal greatly contributed to concentrations of PAHs in soils from the Himalayas.