Water quality safety is always a hot topic. Recently there has been a great increase in the use of polyethylene (PE) pipes in drinking water distribution systems in China. Some organics can leach from PE pipes into drinking water, which is undoubtedly harmful for consumers. In this study, potential organics leaching from two Chinese brands of PE pipe were investigated in order to determine the potential risk to both consumers and water quality. Their released amounts are characterized by UV254 instead of total organic carbon (TOC). Organics are identified by means of gas chromatography coupled with mass spectrometry (GC-MS). Influencing factors such as types of water, time, pH, residual chlorine are discussed. The cytotoxicity of leaching organics is first put forward in this study, and rat C6 glioma cell is used to assess the effect of leaching organics; the increasing dosage of soaking solution negatively affects morphology and relative viability of rat C6 glioma cell. The results show that residual chlorine, time and temperature have a positive effect on organics release, while pH plays an opposite role.
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Research Article|
October 05 2015
Influence factors of organic compounds leaching from PE pipes and the potential toxic effects on E. coli and rat C6 glioma cell
Jingqing Liu;
Jingqing Liu
1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
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Hongxi Peng;
Hongxi Peng
1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
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Shengwei Tan;
Shengwei Tan
1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
2Department of Chemistry, Institute of Microanalytical Systems, Zhejiang University, Hangzhou 310058, China
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Jianmin Wu;
Jianmin Wu
1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
2Department of Chemistry, Institute of Microanalytical Systems, Zhejiang University, Hangzhou 310058, China
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Hamid Bastani;
Hamid Bastani
1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
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Cong Li
1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
E-mail: congil@zju.edu.cn
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Water Supply (2016) 16 (2): 402–409.
Article history
Received:
June 22 2015
Accepted:
September 14 2015
Citation
Jingqing Liu, Hongxi Peng, Shengwei Tan, Jianmin Wu, Hamid Bastani, Cong Li; Influence factors of organic compounds leaching from PE pipes and the potential toxic effects on E. coli and rat C6 glioma cell. Water Supply 1 April 2016; 16 (2): 402–409. doi: https://doi.org/10.2166/ws.2015.148
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