ZHANG Hai-jing,HU Xiao-jian.Dissolution of Environmental Estrogen in Water Delivery and Distribution Materials[J].China Water & Wastewater,2021,37(19 19):47-52.
Dissolution of Environmental Estrogen in Water Delivery and Distribution Materials
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
19 19
Page:
47-52
Column:
Date of publication:
2021-10-01
- Keywords:
- water delivery and distribution material; environmental estrogen; phthalate; bisphenol A; soaking water; dissolution
- Abstract:
- The organic solvent and soaking water immersion tests were carried out for common water delivery and distribution materials in the market. The contents and dissolution amounts of 9 phthalates and 3 bisphenol compounds in the water delivery and distribution materials were analyzed by high performance liquid chromatography-tandem mass spectrometry, and the effect of soaking time on the dissolution amounts was investigated. Seven phthalates and one bisphenol compound were detected in different water delivery and distribution materials, and the dissolution amount in descending order was DEHP, DBP, BPA, DMP, DEP, BBP, DCHP and DOP. The contents of the above substances in the water delivery and distribution materials made of soft PVC, synthetic rubber, synthetic fiber and synthetic coating were relatively high. The relatively high contents of DEHP, DBP and BPA in the water delivery and distribution materials also had higher dissolution amounts in the soaking water. With the increase of the soaking time, the dissolution amounts of the above substances gradually decreased, and were lower than the NSF reference limit after 120 h. It was also confirmed that the water delivery and distribution materials made of soft PVC and synthetic rubber had the potential risk of dissolution of phthalates and bisphenol compounds. However, the risk could be reduced by repeated rinsing and soaking.
Last Update:
2021-10-01