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PCDD/PCDF的环境命运:大气中的度,季节性趋势,不同环境中的交换,风险评估和来源识别

Burak Caliskan¹, Berke Gülegen¹, Abdul Alim Noori¹

¹Department of Environmental Engineering, Faculty of Engineering, Bursa Uludag University, 16059, Niüfer/Bursa, Türkiye.

Environmental research

|December 28, 2025

概括

聚二二二氧化物和二二 furan (PCDD/Fs) 在土耳其布尔萨测量. 大多数PCDD/F处于颗粒阶段,吸入风险低于世卫组织的值.

科学领域:

环境化学环境化学
大气科学大气科学
毒理学毒理学毒理学

背景情况:

多二二二氧化物和二二 furan (PCDD/Fs) 是持久性有机污染物,对环境和健康有重大关注.
了解它们的大气分布和来源对于有效的风险管理和缓解策略至关重要.

研究的目的:

在土耳其布尔萨的各种环境中评估大气气体和颗粒阶段PCDD/F的度.
确定PCDD/Fs在气体和粒子阶段之间的分离行为以及它们的季节性变化.
确定导致大气PCDD/F污染的主要排放源,并评估相关的健康风险.

主要方法:

在城市,半农村和工业地区对17个PCDD/F同源和四至八同源进行大气采样和分析.
计算毒性等价值 (TEQ) 水平和评估颗粒物协会.
应用平衡建模 (基于K_OA) 来估计各种环境介质中的度,以及主要成分分析 (PCA) 来进行来源分配.

主要成果:

总年平均度的 Σ 17 PCDD/F 是 409.80 ± 133.09 fg/m 3 ,其中 78% 与粒子阶段相关,在冬季增加.
均衡建模显示,对一些同源物有很好的一致性,但对高化物有偏差,表明复杂的环境分区.
PCA确定废物焚烧,汽车排放,工业生产和生物质燃烧是主要来源,解释了79.02%的差异.

结论:

巴尔萨大气中的PCDD/F含量主要是颗粒结合的,季节性变化受到排放和分散的影响.
虽然模型预测显示了一些差异,但它们提供了对环境命运的见解,特别是对较少化同源的见解.
鉴定的排放源和低估的吸入风险表明,目前的水平可能不会立即构成重大癌症威胁,但需要持续监测.

关键词:

二氧化二氧化是什么分布系数的分布系数.均衡度的均衡度是指平衡时的度.建模建模模型是什么分区分区分区分区分区分区分区分区分

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