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Sedimentary record of polycyclic aromatic hydrocarbons in a sediment core from a maar lake, Northeast China: evidence in historical atmospheric deposition
Yu-Feng Guan; Jian-Lin Sun; Hong-Gang Ni; Jian-Yang Guo
Corresponding AuthorJian-Yang Guo
2012
Source PublicationJournal of Environmental Monitoring
Volume14Issue:9Pages:2475-2481
Abstract

A maar lake is an excellent ecosystem to study the atmospheric deposition of pollutants, as its contaminants are primarily by atmospheric deposition. In this study, a sediment core from Sihailongwan Maar Lake, Northeast China, was collected and the historical atmospherically deposited polycyclic aromatic hydrocarbons (PAHs) were analyzed. The concentrations of TPAHs (the sum of the US EPA proposed 16 priority PAHs, excluding naphthalene and pyrene) ranged from 473.9 to 2289 ng g−1 with a slow increasing stage in the deeper sediments and a sharp increasing stage in the upper sediments. The input rate of TPAHs, especially that of PAH9 (the sum of fluoranthene, benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, indeno(1,2,3-cd)pyrene, dibenzo(ah)anthrathene, and benzo(ghi)perylene), correlated well to the Chinese historical socioeconomic data. This indicates that sediment PAHs were mainly derived from human activities and PAH9 can be regarded as a better indicator of the local socioeconomic development. Source identification suggested that PAHs were originated primarily from mixed sources (e.g., coal and biomass burning and petroleum combustion), except for perylene which was mostly of diagenetic origin. In addition, the down-core PAHs profile clearly illustrated that PAHs sources in Northeast China experienced a transformation from low- and moderate temperature to high-temperature combustion processes, especially after the late 1980s. Additionally, an ecological risk assessment using two redefined biological thresholds (TEQERL and TEQERM) indicated that most of the PAHs measured in the present sediment core would not cause an immediate toxic effect; only FLU and PHEN are a potential source of concern for biological impairment.

Subject Area环境地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/4800
Collection环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
环境地球化学国家重点实验室
Corresponding AuthorJian-Yang Guo
Recommended Citation
GB/T 7714
Yu-Feng Guan,Jian-Lin Sun,Hong-Gang Ni,et al. Sedimentary record of polycyclic aromatic hydrocarbons in a sediment core from a maar lake, Northeast China: evidence in historical atmospheric deposition[J]. Journal of Environmental Monitoring,2012,14(9):2475-2481.
APA Yu-Feng Guan,Jian-Lin Sun,Hong-Gang Ni,&Jian-Yang Guo.(2012).Sedimentary record of polycyclic aromatic hydrocarbons in a sediment core from a maar lake, Northeast China: evidence in historical atmospheric deposition.Journal of Environmental Monitoring,14(9),2475-2481.
MLA Yu-Feng Guan,et al."Sedimentary record of polycyclic aromatic hydrocarbons in a sediment core from a maar lake, Northeast China: evidence in historical atmospheric deposition".Journal of Environmental Monitoring 14.9(2012):2475-2481.
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