Characterization of the precursors of trihalomethanes and haloacetic acids in the Yuqiao Reservoir in China

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• 作者：Zhi-Guang Niu ; Xiao-Ting Wei ; Ying Zhang
• 关键词：Yuqiao Reservoir ; Trihalomethanes ; Haloacetic acids ; Precursor identification ; Organic fraction
• 刊名：Environmental Science and Pollution Research
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：22
• 期：22
• 页码：17508-17517
• 全文大小：1,003 KB
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• 作者单位：Zhi-Guang Niu (1)
  Xiao-Ting Wei (1)
  Ying Zhang (2)
  
  1. School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
  2. College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Environment
  Atmospheric Protection, Air Quality Control and Air Pollution
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Industrial Pollution Prevention
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1614-7499

文摘

To identify the primary precursors of trihalomethanes and haloacetic acids in the Yuqiao Reservoir in China, dissolved organic matters in the source water were isolated and fractionated into five different fractions (with XAD resin), and both trihalomethane and haloacetic acid formation potentials in each fraction were analysed by liquid-liquid extraction and GC-ECD. The primary precursors of trihalomethanes and haloacetic acids were identified using the index of disinfection by-product formation potential and specific disinfection by-product formation potential. In addition, the relationship between the specific ultraviolet absorbance and the specific disinfection by-product formation potential was studied using correlation analysis. The results indicated that during the sampling period, the hydrophobic acids and hydrophilic matter are the primary organic fractions in the Yuqiao Reservoir, accounting for 27.6-0.9 % and 21.2-2.5%, respectively. Among the five fractions, the hydrophobic acids had the highest disinfection by-product formation potential and specific disinfection by-product formation potential, indicating that the hydrophobic acids were the primary precursors of the disinfection by-products in the Yuqiao Reservoir. A correlation analysis indicates that the specific ultraviolet absorbance had a moderately positive correlation with the specific disinfection by-product formation potential; therefore, the specific ultraviolet absorbance can be a reference index to analyse the ability of organic matter to generate disinfection by-products. Keywords Yuqiao Reservoir Trihalomethanes Haloacetic acids Precursor identification Organic fraction