State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, People's Republic of China.
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, People's Republic of China.
Environ Pollut. 2014 Sep;192:113-20. doi: 10.1016/j.envpol.2014.05.012. Epub 2014 Jun 6.
We investigated effects of storage temperature and duration on release of antimony (Sb) and bisphenol A (BPA) from 16 brands of polyethylene terephthalate (PET) drinking water bottles in China. After 1-week storage, Sb release increased from 1.88-8.32 ng/L at 4 °C, to 2.10-18.4 ng/L at 25 °C and to 20.3-2604 ng/L at 70 °C. The corresponding releases for BPA were less at 0.26-18.7, 0.62-22.6, and 2.89-38.9 ng/L. Both Sb and BPA release increased with storage duration up to 4-week, but their releasing rates decreased with storage time, indicating that Sb and BPA release from PET bottles may become stable under long term storage. Human health risk was evaluated based on the worst case, i.e., storage at 70 °C for 4-week. Chronic daily intake (CDI) caused by BPA release was below USEPA regulation, Sb release in one brand exceeded USEPA regulated CDI (400 ng/kg bw/d) with values of 409 and 1430 ng/kg bw/d for adult and children.
我们研究了储存温度和时间对中国 16 个品牌的聚对苯二甲酸乙二醇酯 (PET) 饮用水瓶中锑 (Sb) 和双酚 A (BPA) 释放的影响。在 4°C 下储存 1 周后，Sb 的释放量从 1.88-8.32ng/L 增加到 25°C 时的 2.10-18.4ng/L，再增加到 70°C 时的 20.3-2604ng/L。BPA 的释放量相应较少，分别为 0.26-18.7、0.62-22.6 和 2.89-38.9ng/L。Sb 和 BPA 的释放量随储存时间的增加而增加，最高可达 4 周，但释放速率随储存时间的延长而降低，这表明 PET 瓶中 Sb 和 BPA 的释放可能在长期储存下变得稳定。根据最坏情况，即 70°C 储存 4 周，评估了人类健康风险。BPA 释放导致的慢性日摄入量 (CDI) 低于 USEPA 规定，一个品牌的 Sb 释放量超过了 USEPA 规定的 CDI（400ng/kg bw/d），成人和儿童的值分别为 409 和 1430ng/kg bw/d。
