Journal
MARINE POLLUTION BULLETIN
Volume 90, Issue 1-2, Pages 129-134Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.11.009
Keywords
PAHs; Unmix model; PMF model; Jiaozhou Bay wetland; Combination source apportionment
Funding
- Program for New Century Excellent Talents in University [NCET-10-0758]
- Qingdao Science and Technology Development Plan [12-1-4-1-(16)-jch]
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16 PAHs in Jiaozhou Bay wetland soils were analyzed by GC/MS. The potential sources and contributions were apportioned by Unmix and PMF models. The total concentrations of PAHs ranged from 176.1 to 563.3 ng/g with a mean of 345.3 ng/g. 2- and 3- rings PAHs were the dominant species accounting for 34.7-87.3% of the total PAHs. The similarities and differences of sources and contributions estimated by Unmix and PMF models were discussed. Three common sources (petrogenic source, coking oven and coal combustion) identified by two models, contributed 43.2%, 39.2% and 12.6% by Unmix and 33.5%, 29.1% and 16.0% by PMF to the total PAHs, respectively. In addition, diesel emission source (5.0%) by Unmix and a mixed source of diesel emission and natural gas burning (21.4%) by PMF were also extracted. It is essential to apply multiple source apportionment techniques to estimate potential source and contributions in further study. (C) 2014 Elsevier Ltd. All rights reserved.
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