Atmospheric wet deposition of dissolved trace elements to Jiaozhou Bay, North China: Fluxes, sources and potential effects on aquatic environments

Jianwei Xing; Jinming Song; Huamao Yuan; Qidong Wang; Xuegang Li; Ning Li; Liqin Duan; Baoxiao Qu

doi:10.1016/j.chemosphere.2017.02.004

Atmospheric wet deposition of dissolved trace elements to Jiaozhou Bay, North China: Fluxes, sources and potential effects on aquatic environments

Chemosphere. 2017 May:174:428-436. doi: 10.1016/j.chemosphere.2017.02.004. Epub 2017 Feb 2.

Authors

Jianwei Xing¹, Jinming Song², Huamao Yuan³, Qidong Wang⁴, Xuegang Li³, Ning Li³, Liqin Duan³, Baoxiao Qu³

Affiliations

¹ Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
² Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Function Laboratory of Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China. Electronic address: jmsong@qdio.ac.cn.
³ Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Function Laboratory of Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
⁴ Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Function Laboratory of Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.

PMID: 28187389
DOI: 10.1016/j.chemosphere.2017.02.004

Abstract

To analyze the fluxes, seasonal variations, sources and potential ecological effects of dissolved trace elements (TEs) in atmospheric wet deposition (AWD), one-year wet precipitation samples were collected and determined for nine TEs in Jiaozhou Bay (JZB) between June 2015 and May 2016. Both the volume-weighted mean (VWM) concentration and flux sequence for the measured TEs was Al > Mn > Zn > Fe > Pb > Se > Cr > Cd > Co. Al was the most abundant TE with a VWM concentration and wet flux of 33.8 μg L^-1 and 29.2 mg m^-2 yr^-1, which were 2 and 3 orders of magnitude higher than those of Co, respectively. The emission intensities of pollutants, rainfall amount and wind speed were the dominating factors influencing seasonal variations of TEs in AWD. Based on enrichment factors, correlation analysis and principal component analysis, most of the TEs in AWD were primarily originated from anthropogenic activities except for Al and Fe, which are typically derived from re-suspended soil dusts. Although the TE inputs by AWD were significantly lower than those by rivers, the TE inputs via short-term heavy rains would distinctly increase surface seawater TE concentrations and then pollute the marine environment of JZB. AWD would have both profound impacts on the biogeochemical cycles of TEs and dual ecological effects (nutrient and toxicity) on aquatic organisms.

Keywords: Atmospheric wet deposition; Deposition fluxes; Ecological effects; Jiaozhou Bay; Source identification; Trace elements.

MeSH terms

Air Pollutants / analysis*
Air Pollutants / chemistry
Air Pollutants / toxicity*
Aquatic Organisms / drug effects*
Atmosphere / chemistry*
Bays / chemistry*
China
Dust / analysis
Environmental Monitoring
Seasons
Soil / chemistry
Trace Elements / analysis*
Trace Elements / chemistry
Trace Elements / toxicity*
Wind

Substances

Air Pollutants
Dust
Soil
Trace Elements