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Source Apportionment of PAHs Using Unmix Model for Yantai Costal Surface Sediments, China

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Abstract

16 Polycyclic aromatic hydrocarbons (PAHs) in 20 surface sediments from Yantai offshore area were measured. The total PAHs concentrations varied from 450.0 to 4,299.0 ng/g, with a mean of 2,492.9 ng/g. The high molecular weight (HMW) PAHs were most abundant and the ratio ranged from 54.9 % to 81.6 % in all sampling stations, indicating that pyrogenic sources were a predominant contribution to PAHs pollution. The source contributions of PAHs were estimated based on the EPA Unmix 6.0 receptor model. The data were well simulated due to a high correlation coefficient between predicted and measured PAHs concentration (R2 = 0.99). A mixed source of coal combustion and traffic pollution contributed to 38.9 % of the measured PAHs, followed by diesel emission (38.8 %) and a mixed source of biomass combustion and gasoline engine emissions (22.3 %). The current findings further validated that Unmix model could be applied to apportion the sources of PAHs in sediments.

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Acknowledgments

This work was supported by Program for New Century Excellent Talents in University (NCET-10-0758) and National Natural Science Foundation of China (40706039).

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Authors and Affiliations

  1. College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China

    Yin-hai Lang & Wei Yang

  2. Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China

    Yin-hai Lang & Wei Yang

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  1. Yin-hai Lang
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  2. Wei Yang
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Correspondence to Yin-hai Lang.

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Lang, Yh., Yang, W. Source Apportionment of PAHs Using Unmix Model for Yantai Costal Surface Sediments, China. Bull Environ Contam Toxicol 92, 30–35 (2014). https://doi.org/10.1007/s00128-013-1164-7

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  • DOI: https://doi.org/10.1007/s00128-013-1164-7

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