在电子废物回收厂收集的大小分离的空气颗粒相关的酸盐和非酸盐塑料添加剂
Patrizia Di Filippo1, Donatella Pomata2, Carmela Riccardi1
1DIT, Italian Workers Compensation Authority (INAIL), 00143, Rome, Italy.
Environmental science and pollution research international
|September 1, 2025
概括
在电子垃圾场的超细颗粒 (PM0.1) 中发现了空气中的塑料添加剂,包括酸盐. 虽然度可以测量,但工人吸入的风险低于监管安全水平,尽管需要进一步的皮肤和摄入暴露研究.
科学领域:
- 环境化学
- 职业健康问题
- 毒理学
背景情况:
- 空气中的颗粒物 (PM) 构成健康风险,特别是超细颗粒 (PM0.1) 由于它们深入肺部和吸收能力.
- 电子废物处理厂处理各种材料,可能会将各种化学添加剂释放到空气中.
- 塑料添加剂,如酸盐和非酸盐,通常使用,并且可以在空气中传播.
研究的目的:
- 在电子废物处理设施中量化不同颗粒大小 (PM0.1,PM0.1-1,PM1-10) 的甲酸和非甲酸塑料添加剂的空气度.
- 评估这些电子废物环境中的工人吸入暴露的风险.
- 调查这些添加剂在不同颗粒大小中的分布.
主要方法:
- 从三个电子废物处理厂收集空气中的颗粒物 (包括超细PM0.1).
- 七种类型的塑料添加剂 (甲酸盐和非甲酸盐) 的提取和气体色谱分析.
- 计算不同颗粒物中的添加剂度,并对工人进行吸入风险评估.
主要成果:
- 在不同的颗粒物中,酸盐度在0. 930. 1μg/ m3之间,通常在较粗的颗粒物中度更高.
- 非酸盐添加剂的度在PM分数中范围为0.053.6μg/m3.
- 添加剂与超细颗粒的质量比率通常高于细颗粒和粗颗粒.
- 对于所有颗粒物,工人的致癌和非致癌风险都低于已确定的安全水平.
结论:
- 电子垃圾中的超细颗粒含有大量的塑料添加剂.
- 工人吸入这些空气添加剂的风险目前低于监管安全门.
- 建议进行进一步的研究,以评估皮肤接触和摄入的风险,以进行全面的暴露评估.
相关概念视频
Plasticizers
114
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
114
Superplasticizers
116
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
116
Types of Step-Growth Polymers: Polyesters
2.3K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.3K
Polymer Classification: Crystallinity
3.1K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
3.1K


