Pollution characteristic of polycyclic aromatic hydrocarbons in the groundwater of Hutuo River Pluvial Fan
CHANG Sheng1,2, GENG Meng-jiao1,2, LIU Yan1,2, WAN Wen-sheng1,2, WANG Shan-jun1,2
1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
In order to investigate the pollution status of polycyclic aromatic hydrocarbons (PAHs) in the groundwater of Hutuo River Pluvial Fan, the 16 US EPA priority control PAHs in the groundwater of this region were analyzed by gas chromatography-mass spectrometry. The occurrence, distribution characteristics, sources and their potential probabilistic carcinogenic risk through drinking water were also assessed in this present study. No PAHs were detected in only two water samples among the 51sample sites. The concentration of the ∑PAHs was ranged from not detectable to 333.4ng/L and with the average value of 58.0ng/L. It was less than that of other reported groundwater regions in China. The average concentration of PAHs for the Gangnan reservoir valley fracture pore water unit (G1), the pore water unit of the top of Hutuo River Pluvial fan (G2) and the pore water unit of the middle part of Hutuo River Pluvial fan (G3) was 215.2ng/L, 9.8ng/L, 9.2ng/L, respectively. The 3~4 ring PAHs was dominant in the total PAHs in G1unit, while the 2~3 ring PAHs was dominant in G2 and G3 units. The source pollution of PAHs in this region was appointed by the molecular ratio and it showed that the coal and biomass burning was predominant source for G1unit, whereas the petroleum products were predominant source for G2 and G3 units. The health risk of drinking groundwater in the study area was evaluated by the recommended method by US EPA and the average cancer risk of G1was over acceptable level (2.1×10-5), which indicated that the quality of groundwater in G1should be pay more attention by government.
盛, 耿梦娇, 刘琰, 万文胜, 王山军. 滹沱河冲洪积扇地下水中多环芳烃的污染特征[J]. 中国环境科学, 2016, 36(7): 2058-2066.
CHANG Sheng, GENG Meng-jiao, LIU Yan, WAN Wen-sheng, WANG Shan-jun. Pollution characteristic of polycyclic aromatic hydrocarbons in the groundwater of Hutuo River Pluvial Fan. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(7): 2058-2066.
Countway R E, Dickhut R M, Canuel E A, et al. Polycyclic aromatic hydrocarbon (PAH) distributions a0associations with organic matter in surface waters of the York River, VA Estuary [J]. Organic Geochemistry, 2003,34(2):209-224.
Krupadam R J, Khan M S, Wate S R. Removal of probable human carcinogenic polycyclic aromatic hydrocarbons from contaminated water using molecularly imprinted polymer [J]. Water Research, 2010,44(3):681-688.
[5]
Wu B, Zhang Y, Zhang X X, et al. Health risk assessment of polycyclic aromatic hydrocarbons in the source water and drinking water of China: Quantitative analysis based on published monitoring data[J]. Science of the Total Environment, 2011, 410-411:112-118.
Christensen E R, Bzdusek P A. PAHs in sediments of the Black River and the Ashtabula River, Ohio: source apportionment by factor analysis [J]. Water Research, 2005,39(4):511-524.
[8]
Velaa N, Martínez-Menchónb M, Navarrob G, et al. Removal of polycyclic aromatic hydrocarbons (PAHs) from grou0water by heterogeneous photocatalysis under natural sunlight [J]. Journal of Photochemistry & Photobiology A Chemistry, 2012,232(5): 32-40.
Yunker M B, Macdonald R W, Vingarzan R, et al. PAHs in the Fraser River basin: a critical appraisal PAH ratios as indicators of PAH source and composition [J]. Organic Geochemistry, 2002, 33(4):489-515.
Nisbet C, Lagoy P. Toxic equivalency factors (TEFs) for polycyclic aromatic hydrocarbons (PAHs) [J]. Regulatory Toxicology and Pharmacology, 1992,16(3):290-300.
[29]
U. S. EPA. The Risk Assessment Guidelines of 1986 [R]. EPA/ 600/18-87/045. Washington DC: Office of Emergency a0Remedial Response, US EPA, 1986.
[30]
Ma W L, Liu L Y, Qi H, et al. Polycyclic aromatic hydrocarbons in water,sediment and soil of the Songhua River Basin, China [J]. Environmental Monitoring and Assessment, 2013,185(10):8399- 8409.
