Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jmarsys.2012.11.004 |
Atmospheric dry-deposition of mineral dust and anthropogenic trace metals to the Bay of Bengal | |
Srinivas, Bikkina; Sarin, M. M. | |
通讯作者 | Sarin, M. M. |
来源期刊 | JOURNAL OF MARINE SYSTEMS
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ISSN | 0924-7963 |
EISSN | 1879-1573 |
出版年 | 2013 |
卷号 | 126页码:56-68 |
英文摘要 | This manuscript presents a comprehensive data set on concentrations of crustal elements (Al, Ca, Fe and Mg) and trace metals (Pb, Cd, Cu, Mn, Cr, Co and Ni) in ambient aerosols studied from the marine atmospheric boundary layer (MABL) of the Bay of Bengal during the period of continental outflow (January-April). Based on cruises conducted during January’09 (winter) and March-April’06 (spring inter-monsoon), mass concentrations (ng m(-3)) of Pb (9-57), Cd (0.01-2.8), Cr (1-17) and Mn (4-103) in the outflow from the Indo-Gangetic Plain were higher during the winter compared to those in the spring inter-monsoon (Pb: 3.2-13.5; Cd: 0.1-1.6; Cr: 02-7.2 and Mn: 4.6-42.7). In contrast, Cu concentration was relatively high during the spring inter-monsoon (3.2-27.9 ng m(-3)); whereas concentrations of Co and Ni were not significantly different (p-value > 0.05) during the two seasons. In general, enrichment factors of Pb and Cd are higher (EFPb: similar to 225; EFCd: similar to 1165) over the southern Bay (south of 15 degrees N) associated with south-east Asian outflow. A significant (p-value<0.05) linear relation of Pb, Cd and Cu with nss-SO42- reaffirms their anthropogenic origin. Another notable feature of temporal data relates to significantly higher ratios of crustal elements (Ca/Al and Fe/Al) associated with the long-range transport of mineral dust from the Thar Desert during the spring inter-monsoon. The deposition of mineral dust (0.3-6 g m(-2) yr(-1)) to the Bay of Bengal is consistent with model results reported in the literature. However, the dominance of anthropogenic trace metals and their air-sea deposition must be considered in any assessment of factors that influence the marine ecosystem in the Bay of Bengal. (c) 2012 Elsevier B.V. All rights reserved. |
英文关键词 | Bay of Bengal Anthropogenic trace metals Aerosol toxicity Mineral dust Air-sea deposition fluxes Residence time |
类型 | Article ; Proceedings Paper |
语种 | 英语 |
国家 | India |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000324785000006 |
WOS关键词 | ARABIAN SEA ; IRON SOLUBILITY ; OPEN-OCEAN ; AEROSOLS ; FLUXES ; INPUT ; VARIABILITY ; CHEMISTRY ; MANGANESE ; ELEMENTS |
WOS类目 | Geosciences, Multidisciplinary ; Marine & Freshwater Biology ; Oceanography |
WOS研究方向 | Geology ; Marine & Freshwater Biology ; Oceanography |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/178578 |
作者单位 | Phys Res Lab, Ahmadabad 380009, Gujarat, India |
推荐引用方式 GB/T 7714 | Srinivas, Bikkina,Sarin, M. M.. Atmospheric dry-deposition of mineral dust and anthropogenic trace metals to the Bay of Bengal[J],2013,126:56-68. |
APA | Srinivas, Bikkina,&Sarin, M. M..(2013).Atmospheric dry-deposition of mineral dust and anthropogenic trace metals to the Bay of Bengal.JOURNAL OF MARINE SYSTEMS,126,56-68. |
MLA | Srinivas, Bikkina,et al."Atmospheric dry-deposition of mineral dust and anthropogenic trace metals to the Bay of Bengal".JOURNAL OF MARINE SYSTEMS 126(2013):56-68. |
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