title: Different senescent HDPE pipe-risk: brief field investigation from source water to tap water in China (Changsha City).
abstract: Semi-volatile organic compounds (SVOCs) derived from plastic pipes widely used in water distribution definitely influence our daily drinking water quality. There are still few scientific or integrated studies on the release and degradation of the migrating chemicals in pipelines. This investigation was carried out at field sites along a pipeline in Changsha, China. Two chemicals, 2, 4-tert-buthylphenol and 1, 3-diphenylguanidine, were found to be migrating from high density polyethylene (HDPE) pipe material. New pipes released more of these two compounds than older pipes, and microorganisms living in older pipes tended to degrade them faster, indicating that the aged pipes were safer for water transmission. Microorganism degradation in water plays a dominant role in the control of these substances. To minimize the potential harm to human, a more detailed study incorporating assessment of their risk should be carried out, along with seeking safer drinking pipes.
authors: College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China.
authors: Jing
authors: J
authors: Tang
authors: College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China. tanglin@hnu.edu.cn.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China. tanglin@hnu.edu.cn.
authors: Lin
authors: L
authors: Tang
authors: College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China. zhangchang@hnu.edu.cn.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China. zhangchang@hnu.edu.cn.
authors: Chang
authors: C
authors: Zhang
authors: College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China.
authors: Guangming
authors: G
authors: Zeng
authors: College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China.
authors: Yaocheng
authors: Y
authors: Deng
authors: College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China.
authors: Haoran
authors: H
authors: Dong
authors: College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China.
authors: Jingjing
authors: J
authors: Wang
authors: College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China.
authors: Yanan
authors: Y
authors: Wu
mesh_terms: D002681:China; D004323:Drainage, Sanitary; D006146:Guanidines / Q000032:analysis*; D006801:Humans; D010636:Phenols / Q000032:analysis*; D010969:Plastics; D020959:Polyethylene; D012306:Risk; D055549:Volatile Organic Compounds / Q000032:analysis*; D014867:Water / Q000737:chemistry; D060753:Water Quality; D014881:Water Supply
chemical_list: D006146:Guanidines; D010636:Phenols; D010969:Plastics; D055549:Volatile Organic Compounds; D014867:Water; C027773:diphenylguanidine; D020959:Polyethylene; C056559:2,4-di-tert-butylphenol
keywords: 2, 4-Tert-buthylphenol; Drinking water; Microorganism degradation; Plastic pipes; SVOCs; Water distribution