...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science and Pollution Research >Distribution of polybrominated diphenyl ethers and dust particle size fractions adherent to skin in indoor dust, Pretoria, South Africa
【24h】

Distribution of polybrominated diphenyl ethers and dust particle size fractions adherent to skin in indoor dust, Pretoria, South Africa

机译：南非比勒陀利亚室内灰尘中附着在皮肤上的多溴联苯醚的分布和灰尘粒径分数的分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to determine human exposure to the indoor toxicant, selection of dust fraction and understanding dust particle size distribution in settled indoor dust are very important. This study examined the influence of dust particle size on the concentration of polybrominated diphenyl ethers (PBDEs) congeners, assessed the distribution of dust particle size and characterized the main indoor emission sources of PBDEs. Accordingly, the concentrations of PBDE congeners determined in different indoor dust fractions were found to be relatively higher in the order of dust particle size: 45-106 μm>(<45 μm)>106-150 μrn. The finding shows arbitrary selection of dust fractions for exposure determination may result in wrong conclusions. Statistically significant moderate correlation between the concentration of Σ_9PBDEs and organic matter content calculated with respect to the total dust mass was also observed (r-=0.55, p =0.001). On average, of total dust particle size <250 urn, 93.4 % (m/m%) of dust fractions was associated with less than 150 μm. Furthermore, of skin adherent dust fractions considered (<150 μm), 86 % (v/v%) is in the range of particle size 9.25-104.7 μm. Electronic materials treated with PBDEs were found the main emission sources of PBDE congeners in indoor environment. Based on concentrations of PBDEs determined and mass of indoor dust observed, 150 μm metallic sieve is adequate for human exposure risk assessment. However, research in this area is very limited and more research is required to generalize the fact.
机译：为了确定人体暴露于室内有毒物质中，粉尘含量的选择和了解沉降室内粉尘中粉尘的粒径分布非常重要。这项研究检查了粉尘粒径对多溴联苯醚（PBDEs）同源物浓度的影响，评估了粉尘粒径的分布并表征了多溴二苯醚的主要室内排放源。因此，发现在不同的室内粉尘部分中确定的PBDE同类物的浓度相对较高，以粉尘颗粒大小的顺序：45-106μm（<45μm）>106-150μm。该发现表明，为确定暴露程度而任意选择灰尘分数可能会得出错误的结论。还观察到Σ_9PBDEs的浓度与相对于总粉尘质量计算的有机物含量之间的统计学显着的适度相关性（r- = 0.55，p = 0.001）。平均而言，在小于250微米的总粉尘粒度中，有93.4％（m / m％）的粉尘含量小于150μm。此外，考虑到的皮肤附着尘埃分数（<150μm）中，86％（v / v％）在粒径9.25-104.7μm范围内。经多溴二苯醚处理的电子材料被发现是室内环境中多溴二苯醚同源物的主要排放源。根据确定的多溴二苯醚浓度和观察到的室内灰尘质量，使用150μm金属筛足以评估人体暴露风险。但是，该领域的研究非常有限，需要更多的研究来概括这一事实。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号