高级检索

    南方三城市居室积尘中PBDEs污染特征及影响因素分析

    Pollution characteristics and influencing factors of polybrominated diphenyl ethers in indoor dust from three southern Chinese cities

      摘要
    • 摘要:
      目的 了解我国南方城市住宅积尘中多溴联苯醚(polybrominated diphenyl ethers, PBDEs)的分布情况, 探究可能的影响因素。
      方法 综合考虑地理位置、经济状况, 在淮河以南区域选取绵阳、深圳、无锡三市, 分别于采暖季和非采暖季收集住宅积尘样本, 同步测量环境参数。通过问卷收集住宅信息及居民生活习惯, 最后获得有效积尘样本84份, 有效问卷79份。采用Mann-Whitney U和Kruskal-Wallis H检验分析浓度差异, 多重线性回归分析相关影响因素。
      结果 绵阳市住宅积尘PBDEs浓度最高(592.20 ng/g), 无锡最低(21.36 ng/g), BDE-47、BDE-66、BDE-71、BDE-85、BDE-138、BDE-153以及∑12PBDEs浓度在采暖季均显著高于非采暖季(P < 0.05)。多重线性回归结果提示, 与机动车道的距离β(95%CI): -0.26(-0.98, -0.02), P < 0.05以及室内甲醛浓度β(95%CI): -0.30(-58.18, -6.53), P < 0.05是住宅积尘中PBDEs的影响因素。
      结论 南方城市住宅积尘PBDEs污染水平较高, 呈现明显季节性特征, 距机动车道距离、室内甲醛浓度可能影响其浓度分布, 未来仍需持续关注室内暴露问题, 以推动室内健康人居环境的建设与发展。

       

      Abstract:
      Objective To investigate the distribution of polybrominated diphenyl ethers (PBDEs) in residential dust in southern Chinese cities and to explore potential influencing factors.
      Methods Considering both geographic location and economic conditions, three cities south of the Huai River, Mianyang, Shenzhen, and Wuxi, were selected. Residential dust samples were collected during the heating and non-heating seasons, while environmental parameters were measured simultaneously. Information on housing characteristics and residents' living habits was obtained through questionnaires. A total of 84 valid dust samples and 79 valid questionnaires were collected. The Mann-Whitney U test and Kruskal-Wallis H test were used to analyze concentration differences and multiple linear regression was applied to analyze influencing factors.
      Results PBDE concentrations in residential dust were highest in Mianyang (592.20 ng/g) and lowest in Wuxi (21.36 ng/g). The concentrations of BDE-47, BDE-66, BDE-71, BDE-85, BDE-138, BDE-153, and ∑12PBDEs were significantly higher during the heating season than during the non-heating season (P < 0.05). Multiple linear regression indicated that the distance from motor vehicle roadway β (95% CI): -0.26(-0.98, -0.02), P < 0.05 and indoor formaldehyde concentration β (95% CI): -0.30(-58.18, -6.53), P < 0.05 were influencing factors for PBDE levels in residential dust.
      Conclusion The PBDE pollution level in residential dust from southern Chinese cities was relatively high and exhibited distinct seasonal variation. The distance from motor vehicle roadways and indoor formaldehyde concentration may affect the concentration distribution. Continuous attention should be paid to indoor exposure issues to promote the construction and development of a healthy indoor living environment.

       

      • HTML全文
      • 参考文献(33)
      • 相关文章
      • 施引文献
    • 资源附件(0)

    /

    返回文章
    返回