Increased migration levels of bisphenol A from polycarbonate baby bottles after dishwashing, boiling and brushing
Increased migration levels of bisphenol A from polycarbonate baby bottles after dishwashing, boiling and brushing
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DOI：
10.1080/0265203031000119061
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发表时间：
2003-07-01
期刊：
影响因子：
--
通讯作者：
Herikstad, H
中科院分区：
文献类型：
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作者：
Brede, C;Fjeldal, P;Herikstad, H
婴儿奶瓶通常由聚碳酸酯塑料制成。单体双酚A残留在瓶中的杂质会从塑料瓶迁移到婴儿食品中，从而引起健康问题。以前对新婴儿奶瓶的迁移测试显示，该物质仅存在微量迁移水平。在目前的工作中，聚碳酸酯奶瓶进行模拟使用的洗碗，煮沸和刷牙。对新瓶和旧瓶进行的迁移测试显示，由于使用，双酚A的迁移显著增加。这一发现可以用聚合物降解来解释。采用固相萃取-气相色谱-质谱联用技术测定了200 ml水食品模拟物样品中双酚A的含量。检测限为0.1 μ l（-1）。12个不同的聚碳酸酯婴儿奶瓶进行了测试，用热水（100摄氏度）填充1小时。新瓶子的平均双酚A水平为0.23 ± 0.12 μ l（-1），而模拟使用的瓶子的平均双酚A水平分别为8.4 ± 4 μ l（-1）（洗碗51次）和6.7 ± 4 μ l（-1）（洗碗169次）。这些瓶子释放的双酚A水平均未超过欧盟最近制定的临时每日耐受摄入量（0.01 mg kg（-1）体重/天）。
Baby bottles are often made of polycarbonate plastic. Impurities remaining in the bottle from the monomer bisphenol A can migrate from the plastic bottles into baby food, thereby causing a health concern. Previous migration testing of new baby bottles showed only trace migration levels of the substance. In the present work, polycarbonate baby bottles were subjected to simulated use by dishwashing, boiling and brushing. Migration testing performed with both new and used bottles revealed a significant increase in migration of bisphenol A due to use. This finding might be explained by polymer degradation. Bisphenol A was determined in 200-ml samples of water food simulant by a method based on solid-phase extraction followed by gas chromatography coupled with mass spectrometry. The detection limit was 0.1 mug l(-1) . Twelve different polycarbonate baby bottles were tested by filling them with hot water (100degreesC) for 1 h. The mean bisphenol A level from new bottles was 0.23 + -0.12 mug l(-1) , while the mean levels from bottles subjected to simulated use were 8.4 + -4 mug l(-1) (dishwashed 51 times) and 6.7 + -4 mug l(-1) (dishwashed 169 times), respectively. None of the bottles released bisphenol A at levels that exceed the recently established provisional tolerable daily intake (0.01 mg kg(-1) body weight/day) in the European Union.