Arsenic speciation in environmental multimedia samples from the Youngsan River Estuary, Korea: A comparison between freshwater and saltwater

doi:10.1016/j.envpol.2017.11.020

	Arsenic speciation in environmental multimedia samples from the Youngsan River Estuary, Korea: A comparison between freshwater and saltwater
	Hong, Seongjin 1; Choi, Sung-Deuk 2; Khim, Jong Seong 3,4
刊名	ENVIRONMENTAL POLLUTION
	2018-06
卷号	237 页码:842-850
关键词	Arsenic speciation Bioaccumulation Distribution coefficient (K-d) Estuary Salinity
ISSN号	0269-7491
DOI	10.1016/j.envpol.2017.11.020
英文摘要	Differences in the distribution, partitioning, and bioaccumulation characteristics of arsenicals between freshwater and saltwater systems remain poorly understood. To determine the characteristics of distribution and behavior of arsenicals, multimedia environmental samples including water, suspended particles, zooplankton, sediments, and porewater were collected from inner (five sites, freshwater) and outer (five sites, saltwater) regions of the estuary dike of the Youngsan River Estuary in South Korea (Nov., 2012). Six organic and inorganic forms of As were separated and measured using HPLC ICP/MS equipped with an anion exchange column. Concentrations of arsenicals in water samples of the inner region (mean = 1.5 mu g As L-1) were significantly lower than in those of the outer region (mean = 5.2 mu g As L-1). Conversely, concentrations of As in suspended particles in the inner region (mean = 14 mu g As eg(-1)) were much greater than in the outer region (mean = 5.7 mu g As g(-1)). The field-based distribution coefficient(K-d) for As depended strongly on salinity; relatively greater K-d values were found in freshwater compared with saltwater. The As-V was found to be the major form of As in all water and particle samples in both inner and outer regions. The zooplankton species were significantly distinguishable between the inner and outer regions; cladocerans were the most dominant species in freshwater and cyclopoida were predominantly found in saltwater. The As concentrations in zooplankton were shown to be particle-concentration dependent, suggesting that dietary exposure plays a substantial role in the bioaccumulation of As. Inorganic arsenicals, such as As-V and As-III were the most dominant forms found in zooplankton. Partitioning behavior of As between porewater and sediments was similar to that in water particle distributions. The results of the present study enhance the understanding of As biogeochemistry in river and estuarine environments. (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词	SUSPENDED PARTICLES ; PARTICULATE ; UK
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000431158900086
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26209]
专题	自然资源部第一海洋研究所
通讯作者	Khim, Jong Seong
作者单位	1.Chungnam Natl Univ, Dept Ocean Environm Sci, Daejeon 34134, South Korea 2.UNIST, Sch Urban & Environm Engn, Ulsan 44919, South Korea 3.Seoul Natl Univ, Sch Earth & Environm Sci, 1 Gwanak Ro, Seoul 08826, South Korea 4.Seoul Natl Univ, Res Inst Oceanog, 1 Gwanak Ro, Seoul 08826, South Korea
推荐引用方式 GB/T 7714	Hong, Seongjin,Choi, Sung-Deuk,Khim, Jong Seong. Arsenic speciation in environmental multimedia samples from the Youngsan River Estuary, Korea: A comparison between freshwater and saltwater[J]. ENVIRONMENTAL POLLUTION,2018,237:842-850.
APA	Hong, Seongjin,Choi, Sung-Deuk,&Khim, Jong Seong.(2018).Arsenic speciation in environmental multimedia samples from the Youngsan River Estuary, Korea: A comparison between freshwater and saltwater.ENVIRONMENTAL POLLUTION,237,842-850.
MLA	Hong, Seongjin,et al."Arsenic speciation in environmental multimedia samples from the Youngsan River Estuary, Korea: A comparison between freshwater and saltwater".ENVIRONMENTAL POLLUTION 237(2018):842-850.