Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/89404
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Type: Journal article
Title: Characterization of dissolved organic matter from Australian and Chinese source waters by combined fractionation techniques
Author: Wei, Q.
Fabris, R.
Chow, C.
Yan, C.
Wang, D.
Drikas, M.
Citation: Water Science and Technology, 2011; 64(1):171-177
Publisher: IWA Publishing
Issue Date: 2011
ISSN: 0273-1223
1996-9732
Statement of
Responsibility: 
Qunshan Wei, Rolando Fabris, Christopher W. K. Chow, Changzhou Yan, Dongsheng Wang and Mary Drikas
Abstract: The character of dissolved organic matter (DOM) in source waters from two countries (Australia and China) was investigated using an extended fractionation technique by combining resin adsorption, ultrafiltration and high performance size exclusion chromatography. There are distinctive chemical characteristics associated with DOM origins. Australian sourced DOM had higher hydrophobic acid (HoA) content and exhibited a more pronounced humic character, indicating a higher influence from allochthonous organics (decayed plant bodies from vegetated catchments). The higher content of hydrophobic base and neutral components found in Chinese DOM, may be attributed to the effects of increasing pollution caused by the rapid urbanization in China. The molecular weights (MWs) of aquatic HoA are predominantly in the moderate (e.g., 1-10 kDa) or small (e.g., < 1 kDa) ranges. This suggests that aquatic HOA should not be assumed as high MW organics without experimental validation. It is also found that some of the low MW compounds in our samples were hydrophobic, which could explain the observation of low MW organic compounds being able to be removed by conventional treatment processes.
Keywords: Water Pollutants, Chemical; Chromatography, Gel; Ultrafiltration; Organic Chemicals; Adsorption; Water Quality; China; Australia; Chemical Fractionation
Rights: © IWA Publishing 2011
RMID: 0030022683
DOI: 10.2166/wst.2011.432
Appears in Collections:Chemistry publications

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