水晶泥中的硼对儿童的经口暴露量研究

Study on the exposure of boron in slime to children

本文调查了中国23个省份605名0~14岁儿童使用水晶泥的情况,分析了各国对水晶泥的禁限情况,抽检了网络和线下销售的20款水晶泥中的可迁移硼含量,对比了水晶泥的硼总含量和可迁移含量的关系,考察了玩耍水晶泥20 min后,单位皮肤的水晶泥残留量。结果显示,20款水晶泥中的可迁移硼平均含量为1128 mg/kg,远超欧盟限量。水晶泥在儿童中使用率较高,各年龄段的儿童每次玩耍水晶泥的时间集中在10~30 min,部分儿童玩耍时伴随手口接触。3~6岁儿童水晶泥日均暴露量为34.84μg/kg bw/day。目前水晶泥中的硼含量较高,儿童具有一定暴露风险,应引起重视。

This study investigates 605 children aged 0-14 years from 23 provinces in China,analyzes the restrictions on slime in various countries,checks the content of transferable boron in 20 types of slime sold online and offline,compares the relationship between the total boron content and the transferable content of slime,and investigates the residual amount of slime per unit skin after playing with slime for 20 min.The average content of transferable boron in 20 kinds of slime was 1128 mg/kg,far exceeding the EU limit.The use rate of slime is high among children.Children of all ages spend 10-30 min playing with slime each time.Some children play with hand-to-mouth contact.The daily exposure of children aged 3-6 to crystal mud was 34.84μg/kg bw/day.The content of boron in slime is high,which should be paid attention to.