| 家庭尘土中多溴联苯醚的含量及人体暴露水平初步研究 |
| 摘要点击 2778 全文点击 2452 投稿时间：2009-02-19 修订日期：2009-04-16 |
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| 中文关键词 多溴联苯醚 家庭尘土 含量 尘土摄入 人体暴露 |
| 英文关键词 polybrominated diphenyl ethers (PBDEs) house dust concentration dust ingestion human exposure |
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| 中文摘要 |
| 在广州和海口随机采集了52个家庭尘土样品，用GC/MS定量分析了样品中∑10 PBDEs (BDE 28, 47, 66, 85, 99, 100, 153, 154, 183, 209之和)的含量、单体组成模式和可能的影响因素，并估算了成年人和婴幼儿通过尘土摄入对PBDEs的暴露水平.结果表明，所有样品中都检出PBDEs，∑10 PBDEs 的含量范围为544.2～9 654 ng/g，中位值和平均值分别为2 547 ng/g和3 096 ng/g，广州样品中∑10 PBDEs含量明显高于海口样品.尘土中PBDEs含量与家用电器和含聚氨酯泡沫家具数量、电器使用时间没有显著相关性.家庭尘土中PBDEs的主要成分是BDE209，其平均含量高达3?021 ng/g，占∑10 PBDEs含量的73.70%～99.74%，平均值为96.85%.BDE47、99和183是∑9PBDEs(BDE209除外)中含量最丰富的单体，其含量均值分别为24.48%、23.99%和21.66%，广州和海口样品的单体组成没有显著区别.成年人和婴幼儿通过尘土摄入对PBDEs的暴露水平分别为10.59～254.7 ng/d和140.1～509.3 ng/d，由于婴幼儿的尘土摄入量远大于成年人，其对PBDEs的暴露水平也明显偏高.尘土摄入是人体暴露于PBDEs的重要途径，对婴幼儿更是如此. |
| 英文摘要 |
| Fifty-two house dust samples were randomly collected in Guangzhou and Haikou City，to analyze the concentrations of ∑10PBDEs (sum of BDE 28，47，66，85，99，100，153，154，183 and 209)，the PBDE composition profiles，and possible influencing factors, and estimate human exposure to PBDEs via dust ingestion for adults and toddlers. The results showed that PBDEs were found in all samples，with the ∑10 PBDEs concentrations ranging from 544.2 ng/g to 9 654 ng/g，and with median (mean) of 2 547 (3 096) ng/g. The PBDE levels in Guangzhou samples were obviously higher than those in Haikou. No significant correlations between PBDE levels and residential characteristics (number of TVs，computers，and polyurethane foam-contained furniture，time of using TVs and computers) were observed. BDE209，with a mean concentration of 3?021 ng/g，was the dominated congener，contributing 73.70%-99.74% to the ∑10 PBDEs，with a mean contribution of 96.85%. BDE 47，99 and 183 were the most abundant congeners of ∑9 PBDEs (BDE 209 excluded)，with a mean contribution of 24.48%，23.99%，and 21.66%，respectively. There is no notable difference in PBDE composition between Guangzhou and Haikou samples. The estimated exposure for adults and toddlers to PBDEs ranged from 10.59 ng/d to 254.7 ng/d and from 140.1 ng/d to 509.3 ng/d，respectively. Due to their increased dust ingestion rates，toddlers intook more PBDEs via dust ingestion than adults. Dust ingestion was an important human exposure route for PBDEs，especially for toddlers. |
