Characterization of dissolved organic carbon in shallow groundwater of chronic kidney disease affected regions in Sri Lanka

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 水污染控制实验室

	Characterization of dissolved organic carbon in shallow groundwater of chronic kidney disease affected regions in Sri Lanka
	Makehelwala, Madhubhashini ; Wei, Yuansong ; Weragoda, Sujithra K.; Weerasooriya, Rohan ; Zheng, Libing
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-04-10
卷号	660 页码:865-875
关键词	Dissolved organic carbon Calcium Sulfate Fluorescence spectroscopy Pentachlorophenol
ISSN号	0048-9697
英文摘要	Number of Chronic Kidney Disease patients with no identifiable cause (Chronic Kidney Disease Unknown Aetiology, CKDu) are escalating in the North Central Province (NCP) of Sri Lanka. This study examined distribution of dissolved organic carbon (DOC) in shallow groundwater of three CKDu risk zones (high risk, HR; low risk, LR and no risk, NR) and a control zone (CR) from wet to dry seasons. The interactions of DOC with calcium and magnesium ions and metabolites of selected pesticides were also examined. The lowest CODMn/DOC values of 0.60 +/- 0.19, 0.58 +/- 0.17 were reported in the DOC of the HR water in the wet and dry seasons, respectively, and this DOC fraction encompasses organic compounds with the lowest labile C with the highest aromaticity. Four distinct fluorescence DOC fractions in the HR water were identified with fulvic acid component associated as dominant non-labile C fraction. The essential building blocks of non-labile C were concentrated into molecular weight (MW) fraction II (900-1800 Da). The DOC source in all groundwater was identified as autochthonous (fluorescence index > 1.8). In the HR water, pentachlorophenol (PCP) was also detected in appreciable quantities. The factor loadings based on principal component analysis (PCA) showed a positive correlation between DOC and sulfate, calcium, total iron, PCP in the HR groundwater. Accordingly, it can be inferred that divalent cations (Ca2+, Mg2+) abundant in the HR groundwater interact with phenolate and carboxylate functional groups in DOC at alkaline pH. (C) 2018 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43226]
专题	生态环境研究中心_水污染控制实验室
作者单位	1.Chinese Acad Sci, State Key Joint Lab Environm Simulat & Pollut Con, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Dept Water Pollut Control Technol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Natl Water Supply & Drainage Board, Katugastota, Sri Lanka 5.Natl Inst Fundamental Studies, Hanthana Rd, Kandy 20000, Sri Lanka
推荐引用方式 GB/T 7714	Makehelwala, Madhubhashini,Wei, Yuansong,Weragoda, Sujithra K.,et al. Characterization of dissolved organic carbon in shallow groundwater of chronic kidney disease affected regions in Sri Lanka[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,660:865-875.
APA	Makehelwala, Madhubhashini,Wei, Yuansong,Weragoda, Sujithra K.,Weerasooriya, Rohan,&Zheng, Libing.(2019).Characterization of dissolved organic carbon in shallow groundwater of chronic kidney disease affected regions in Sri Lanka.SCIENCE OF THE TOTAL ENVIRONMENT,660,865-875.
MLA	Makehelwala, Madhubhashini,et al."Characterization of dissolved organic carbon in shallow groundwater of chronic kidney disease affected regions in Sri Lanka".SCIENCE OF THE TOTAL ENVIRONMENT 660(2019):865-875.