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题名: Characterization of dissolved organic matter for prediction of trihalomethane formation potential in surface and sub-surface waters
作者: Awad, John; van Leeuwen, John; Chow, Christopher; Drikas, Mary; Smernik, Ronald J.; Chittleborough, David J.; Bestland, Erick
刊名: JOURNAL OF HAZARDOUS MATERIALS
出版日期: 2016-05-05
卷号: 308, 期号:0, 页码:430-439
关键词: Catchment runoff ; DOM character ; THMFP
DOI: 10.1016/j.jhazmat.2016.01.030
部门归属: 环境水质学国家重点实验室
英文摘要: Dissolved organic matter (DOM) in surface waters used for drinking purposes can vary markedly in character dependent on their sources within catchments. The character of DOM further influences the formation of disinfection by products when precursor DOM present in drinking water reacts with chlorine during disinfection. Here we report the development of models that describe the formation potential of trihalomethanes (THMFP) dependent on the character of DOM in waters from discrete catchments with specific land-use and soil textures. DOM was characterized based on UV absorbance at 254 nm, apparent molecular weight and relative abundances of protein-like and humic-like compounds. DOM character and Br concentration (up to 0.5 mg/L) were used as variables in models (R-2 > 0.93) of THMFP, which ranged from 19 to 649 mu g/L. Chloroform concentration (12 594 mu g/L.) and relative abundance (27 - 99%) were first modeled (R-2 > 0.85) and from these, the abundances of bromodichloromethane and chlorodibromomethane estimated using power and exponential functions, respectively (R-2 > 0.98). From these, the abundance of bromoform is calculated. The proposed model may be used in risk assessment of catchment factors on formation of trihalomethanes in drinking water, in context of treatment efficiency for removal of organic matter. Crown Copyright (C) 2016 Published by Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36018
Appears in Collections:环境水质学国家重点实验室_期刊论文

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