Bulk atmospheric deposition of hydrocarbons to lower Chesapeake Bay |
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| Affiliation: | 1. Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon 22012, South Korea;2. Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon 22012, South Korea;3. Department of Biology, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon 22012, South Korea;1. Department of Marine Environment and Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan;2. Kuroshio Research Group, Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan;3. Department of Public Health, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan;4. Research Center of Environmental Medicine, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan;5. Institute of Marine Biology, National Dong-Hwa University, Pingtung, Taiwan;1. Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China;2. Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment, 1037 Luoyu Road 430074, Wuhan, China;3. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, China;1. Department of Environmental Sciences, Informatics and Statistics, Università Ca Foscari Venezia, I-30123 Venezia, Italy;2. Department of Molecular Sciences and Nanosystems, Università Ca Foscari Venezia, I-30123 Venezia, Italy;3. Dipartimento Provinciale di Venezia, Agenzia Regionale per la Prevenzione e Protezione Ambientale del Veneto, I-30174 Mestre, Italy |
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| Abstract: | Anthropogenic and biogenic hydrocarbons (HC) were continuously deposited from the atmosphere at stations in SE Virginia. The bulk deposition rate for total unresolved complex mixture (UCM) and n-alkane HC was constant at all stations during the sampling period (> 1 year). The deposition rates at the three non-urban stations was similar and averaged 69, 27 and 18 μg m−2 d−1 for total, UCM and n-alkane HC, respectively. The urban station had a higher deposition rate for total (203 μg m−2 d−1) and UCM (90 μg m−2 d−1) HC than the non-urban stations, but a similar deposition rate for n-alkanes (22 μg m−2d−1). These results indicate a regionally similar deposition rate for biogenic (n-alkanes) and anthropogenic (UCM) HC, with a major localized input of anthropogenic HC at the urban station. Long range atmospheric transport followed by dry deposition appear to be the major processes responsible for these similar deposition rates over this geographical area. |
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