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Shaoxin Zi¹, Jiale Xu¹, Yingxin Zhang¹

¹College of Marine and Environmental Sciences, Ministry of Education Key Laboratory of Marine Resource Chemistry and Food Technology, Tianjin University of Science & Technology, Tianjin, 300457, China.

Environmental science and pollution research international

|October 31, 2023

概括

双S (BPS) 和双F (BPF) 异构体在土壤中表现出比双A (BPA) 更大的流动性,增加了地下水污染风险. 了解它们的环境命运对于风险评估至关重要.

科学领域:

环境化学环境化学
土壤科学土壤科学
环境毒理学环境毒理学

背景情况:

由于BPA的限制,双A (BPA) 替代物的生产增加,如双S (BPS) 和双F (BPF).
对BPA及其在多孔介质中的替代品的环境命运和运输的了解有限.
BPA替代品的潜在风险污染土壤和地下水系统.

研究的目的:

调查BPA,BPS和BPF异构体 (4,4'-BPF, 2,2'-BPF, 2,4'-BPF) 与含有不同土壤有机物 (SOM) 的土壤的相互作用.
为了评估这些双相似物在多孔介质中的运输和吸附行为.
评估BPA替代品对环境的影响,特别是地下水污染风险.

主要方法:

使用14C标记的双相似物进行列和批量吸附实验.
使用了四种标准土壤,土壤有机物 (SOM) 含量不同.
应用了双位不平衡吸模型来模拟和解释列实验数据.

主要成果:

与BPA相比,BPS和4,4'-BPF在和土壤中表现出明显更强的运输能力.
双F异构体的移动性在含有高SOM含量的和土壤中有所不同.
模型模拟准确地描述了双相似物与土壤的相互作用,突出了SOM在动态吸附中的作用.

结论:

疏水性是BPA,BPS,4,4'-BPF和土壤之间的吸附亲和力差异的主要驱动因素.
结合影响了4,4'-BPF及其异构体之间的差异性吸附.
作为BPA的替代品,BPS和BPF异构体在和土壤中具有更高的流动性,对地下水质量构成重大风险.

关键词:

吸附方式吸附方式吸附方式 BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA BPA 在 BPF BPF 中.在BPS中,BPS是BPS.土壤有机物质土壤有机物质.标准土壤标准土壤交通运输交通运输交通运输交通运输

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