Bisphenol A migration from polycarbonate baby bottle with repeated use

作者：Nam Sung Hyun; Seo Young Min; Kim Man Goo^*

来源：Chemosphere, 2010, 79(9): 949-952.

DOI：10.1016/j.chemosphere.2010.02.049

• Endocrine disrupting chemical
• Baby bottle
• Polycarbonate
• GC/MS
• Migration
• Hydrolysis

This study was to quantify the migration of bisphenol A (BPA), from new polycarbonate (PC) baby bottle into the water filled in the bottle, with repeated use up to 100 times and extraction by water temperature ranging from 40 degrees C to 100 degrees C. BPA was determined by GC-MS, operated in the selected ion monitoring mode. The concentrations of BPA, migrated from brand-new PC baby bottle, were 0.03 ppb and 0.13 ppb at 40 degrees C and 95 degrees C, respectively. However, the concentration of BPA from the bottle used for 6 months, were 0.18 ppb and 18.47 ppb at 40 degrees C and 95 degrees C, respectively. The levels of BPA migration were rapidly increased when the water temperature was over 80 degrees C. The variations of BPA level were divided into three regions: lag effect, steady and aging, which showed different increasing rate. PC baby bottle after being utilized 60 times which was correspond to the baby bottle used for 3 months started aging. It also showed an increasing rate of 4.9 x 10(-2) ppb time(-1). These results are explained by increase in d-spacing of PC baby bottle. The d-spacing of PC baby bottle increases with repeated use from 0.499 nm in brand-new bottles to 0.511 nm with bottles which had been used for 6 months.

• 出版日期2010-5