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Volume 34 Issue 3
May  2015
Article Contents

Citation:

Source apportionment of PAHs in surface sediments from Bohai Sea and adjacent area

  • Received Date: 2014-04-25
    Accepted Date: 2014-06-12
  • Sixteen priority polycyclic aromatic hydrocarbons (PAHs) in surface sediments from Bohai Sea and adjacent area were quantified by GC-MS, and sources of PAHs were apportioned based on a variety of data analysis methods. Thirteen PAHs were detected in all samples, excluding naphthalene (NAP), acenaphthylene (ACPY) and acenaphthene (ACP), which were not detected in some samples. The total concentrations of PAHs varied from 148.2710-9 to 1211.8110-9, with a mean value of 507.1310-9. A positive correlation exists between TOC and the total PAH concentrations (R=0.66, P=0.0002), suggesting that TOC content is an important controlling factor for distribution of PAHs in sediment. The proportion of 4~6 ring-PAHs was quite high, with a LMW/HMW value of 0.76, indicating that PAHs were mainly from pyrogenic sources. Molecular diagnostic indices showed that the PAHs were mainly from biomass, coal and petroleum combustion. Principal component analysis-multiple linear regression (PCA-MLR) suggested that coal combustion, traffic (petroleum combustion), coke production and petroleum sources could be the primary PAH contributors, accounting for 54.3%, 28.6%, 13.4% and 3.7% of the total concentrations, respectively.
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  • [1] 薛荔栋,郎印海,刘爱霞,等.黄海近岸表层沉积物中多环芳烃来源解析[J].生态环境,2008,17(4):1369-1375.[7]郭志刚,杨作升,陈致林,等.东海陆架泥质区沉积有机质的物源分析[J].地球化学,2001,30(5):416-424.[16]DUVAL M M,FRIEDLANDER S K.Source resolution of polycyclic aromatic hydrocarbons in the Los Angeles atmosphere:Application of a chemical species balance method with first order chemical decay[R].Washington,DC:United States Environmental Protection Agency,1982.[22]翁 非.中国能源结构特征及发展前瞻[J].经济视角,2012(1):90-92.[23]赵玉慧,孙培艳,王鑫平,等.多环芳烃指纹用于渤海采油平台原油的鉴别[J].色谱,2008,26(1):43-49.[24]程远梅,祝凌燕,田胜艳,等.海河及渤海表层沉积物中多环芳烃的分布与来源[J].环境科学学报,2009,29(11):2420-2426.[25]林秀梅,刘文新,陈江麟,等.渤海表层沉积物中多环芳烃的分布与生态风险评价[J].环境科学学报,2005,25(1):70-75.
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Source apportionment of PAHs in surface sediments from Bohai Sea and adjacent area

  • 1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China;
  • 2. First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

Abstract: Sixteen priority polycyclic aromatic hydrocarbons (PAHs) in surface sediments from Bohai Sea and adjacent area were quantified by GC-MS, and sources of PAHs were apportioned based on a variety of data analysis methods. Thirteen PAHs were detected in all samples, excluding naphthalene (NAP), acenaphthylene (ACPY) and acenaphthene (ACP), which were not detected in some samples. The total concentrations of PAHs varied from 148.2710-9 to 1211.8110-9, with a mean value of 507.1310-9. A positive correlation exists between TOC and the total PAH concentrations (R=0.66, P=0.0002), suggesting that TOC content is an important controlling factor for distribution of PAHs in sediment. The proportion of 4~6 ring-PAHs was quite high, with a LMW/HMW value of 0.76, indicating that PAHs were mainly from pyrogenic sources. Molecular diagnostic indices showed that the PAHs were mainly from biomass, coal and petroleum combustion. Principal component analysis-multiple linear regression (PCA-MLR) suggested that coal combustion, traffic (petroleum combustion), coke production and petroleum sources could be the primary PAH contributors, accounting for 54.3%, 28.6%, 13.4% and 3.7% of the total concentrations, respectively.

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