杨微微, 许杉, 黄玉琪, 曾源, 陈社军. 城市大气颗粒物中塑化剂污染水平的影响因素[J]. 华南师范大学学报(自然科学版), 2023, 55(2): 55-61. DOI: 10.6054/j.jscnun.2023020
引用本文: 杨微微, 许杉, 黄玉琪, 曾源, 陈社军. 城市大气颗粒物中塑化剂污染水平的影响因素[J]. 华南师范大学学报(自然科学版), 2023, 55(2): 55-61. DOI: 10.6054/j.jscnun.2023020
YANG Weiwei, XU Shan, HUANG Yuqi, ZENG Yuan, CHEN Shejun. The Influencing Factors on the Pollution Levels of PM-bound Plasticizers in Megacity[J]. Journal of South China Normal University (Natural Science Edition), 2023, 55(2): 55-61. DOI: 10.6054/j.jscnun.2023020
Citation: YANG Weiwei, XU Shan, HUANG Yuqi, ZENG Yuan, CHEN Shejun. The Influencing Factors on the Pollution Levels of PM-bound Plasticizers in Megacity[J]. Journal of South China Normal University (Natural Science Edition), 2023, 55(2): 55-61. DOI: 10.6054/j.jscnun.2023020

城市大气颗粒物中塑化剂污染水平的影响因素

The Influencing Factors on the Pollution Levels of PM-bound Plasticizers in Megacity

  • 摘要: 以广州市为研究区域,解析PM2.5中几种不同类型塑化剂之间的相关性,着重探讨气象条件和社会经济等因素对塑化剂浓度的影响。结果表明: 用途相似以及在工业品中共存是塑化剂在大气颗粒物中具有较好相关性的重要原因。气象条件对塑化剂浓度变化的影响主要取决于污染物的理化性质。太阳辐射增强和温度上升有利于大部分塑化剂从各类介质中挥发并在PM2.5中发生富集,空气湿度的增加则有利于促进高水溶性塑化剂的大气清除过程。风速对塑化剂具有稀释作用,能降低其污染程度,而降雨对于大部分塑化剂的大气清除作用有限。社会经济因素也可一定程度上影响广州各城区大气中塑化剂的浓度。颗粒物中主要的塑化剂与第二产业经济指标存在关联,表明工业活动可能是这些塑化剂污染物的重要来源。此外,第三产业对部分塑化剂污染物也具有潜在的影响和贡献。

     

    Abstract: The correlations among PM-bound plasticizers in Guangzhou were revealed. The influencing factors, including meteorological conditions and socioeconomic factors, were addressed to understand their influence on the plasticizer concentrations in the air. The correlations of plasticizers in PM2.5 largely depend on their similar applications and the coexistence in industrial products. The influence of meteorological factors is mostly dependent on the physicochemical properties of the plasticizers. The increasing solar radiation and temperature can promote the enrichment of plasticizers in PM2.5, while the relative humidity can increase the atmospheric scavenging for the chemicals with high water solubilty. Wind can significantly reduce the pollution of plasticizers in the air, but the rain has a limited effect on the scavenging of most PM-bound plasticizers. Socio-economic factors can also influence to some extent the concentration of plasticizers in the atmosphere in the urban areas of Guangzhou.The concentrations of primary plasticizers in PM2.5 depend on the gross domestic product of the secondary industry sector, suggesting the industrial actities may be the important source of these pollutants. In addition, the tertiary industry also showed potential influence on some of the plasticizers.

     

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