|Title:||Occurrence of nonylphenol and bisphenol A in household water pipes made of different materials||Authors:||Yang-Chen Cheng
|Keywords:||Endocrine-disrupting chemicals; Nonylphenol; Bisphenol A; Household water pipes; Polyvinyl chloride; Drinking water||Issue Date:||2016||Publisher:||SPRINGER||Journal Volume:||188||Journal Issue:||10||Source:||ENVIRONMENTAL MONITORING AND ASSESSMENT||Abstract:||
© 2016, Springer International Publishing Switzerland. We assessed the occurrence of nonylphenol (NP) and bisphenol A (BPA) in tap water supplied through polyvinyl chloride (PVC), stainless steel, and galvanized pipes. Water samples were collected from selected households in Taipei and Kaohsiung (Northern and Southern Taiwan, respectively) in different seasons to elucidate the effects of pipeline materials and ambient temperatures on NP and BPA concentrations in tap water. We detected higher concentrations of NP in tap water from households using PVC pipes (64–195 ng/L) than from those using stainless steel pipes (17–44 ng/L) and galvanized pipes (27–96 ng/L). To verify that water can absorb NP and BPA from PVC pipes, we sealed Milli-Q and tap water in PVC and stainless steel pipes to assess the potential release of NP and BPA from the pipes into the water. Both NP and BPA concentrations initially increased with contact time in the PVC pipes, and the concentration profiles during the retention appeared to be more strongly affected by ambient temperatures. Concentration variations in the stainless steel pipes were smaller than those in the PVC pipes.
|Appears in Collections:||食品安全與健康研究所|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.