The level and daily intake of BPA in drinking water in Taiwan

• Main Authors: Pei-Chun Chao, 趙培君
• Other Authors: I-Fang Mao
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/70949914498418481441

碩士 === 國立陽明大學 === 環境與職業衛生研究所 === 100 === Bisphenol A (BPA) is an important industrial chemical that used as an intermediate in the manufacture of various products such as epoxy resins, polycarbonate (PC), and dental sealants. BPA is known as an endocrine-disrupting chemical that may cause harmful effects in animals and probably in humans. Previous studies suggested that the primary source of human exposure to BPA was through dietary intake. To our best knowledge, there was no study focusing on the exposure of BPA through drinking water in Taiwan. The objective of this study was to investigate the levels of BPA in bottled water and tap water and daily intake of BPA through these two exposure routes in Taiwan. The results showed that BPA was present in all the bottled water tested, detection rate was 100%. The detection rate of BPA in tap water was only 47%. The BPA concentrations in bottled water and tap water ranged from 2.11 to 18.18 ng/mL and from 0.69 to 17.81 ng/mL, respectively. In Taiwan, tap water in southern Taiwan had the highest average concentration of BPA and in central Taiwan had the lowest, but they were not statistically significant different from each other. Bottle water in northern Taiwan had the highest average concentration of BPA and in central Taiwan had the lowest, they were not statistically significant different from each other, either. Daily BPA intake for adults was 5.63 μg/day. The daily BPA intake of people in southern Taiwan was the highest (8.85 μg/day) among Taiwanese and most of them were from tap water, while in central Taiwan was the lowest (3.88 μg/day) but most of them were from bottled water. The level and daily intake of BPA in drinking water in this study was higher than other countries, There are a few studies and legislation specific to BPA in Taiwan. Further research in this field is necessary.