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Insights into the influence of polystyrene microplastics on the bio-degradation behavior of tetrabromobisphenol A in soil
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2024-03-27 , DOI: 10.1016/j.jhazmat.2024.134152
Jianning Chang 1 , Jinsong Liang 2 , Yajie Zhang 1 , Ru Zhang 1 , Wei Fang 1 , Haibo Zhang 3 , Su Shiung Lam 4 , Panyue Zhang 1 , Guangming Zhang 2
Affiliation  

Soil contamination by emerging pollutants tetrabromobisphenol A (TBBPA) and microplastics has become a global environmental issue in recent years. However, little is known about the effect of microplastics on degradation of TBBPA in soil, especially aged microplastics. In this study, the effect of aged polystyrene (PS) microplastics on the degradation of TBBPA in soil and the mechanisms were investigated. The results suggested that the aged microplastics exhibited a stronger inhibitory effect on the degradation of TBBPA in soil than the pristine microplastics, and the degradation efficiency of TBBPA decreased by 21.57% at the aged microplastic content of 1%. This might be related to the higher TBBPA adsorption capacity of aged microplastics compared to pristine microplastics. Aged microplastics strongly altered TBBPA-contaminated soil properties, reduced oxidoreductase activity and affected microbial community composition. The decrease in soil oxidoreductase activity and relative abundance of functional microorganisms (e.g., Bacillus, Pseudarthrobacter and Sphingomonas) caused by aged microplastics interfered with metabolic pathways of TBBPA. This study indicated the importance the risk assessment and soil remediation for TBBPA-contaminated soil with aged microplastics.

中文翻译:


了解聚苯乙烯微塑料对土壤中四溴双酚 A 生物降解行为的影响



近年来,新兴污染物四溴双酚 A (TBBPA) 和微塑料对土壤的污染已成为全球环境问题。然而,人们对微塑料对土壤中 TBBPA 降解的影响知之甚少,尤其是老化的微塑料。本研究研究了老化聚苯乙烯 (PS) 微塑料对土壤中 TBBPA 降解的影响及其机制。结果表明,老化的微塑料对土壤中TBBPA的降解抑制作用强于原始微塑料,当老化的微塑料含量为1时,TBBPA的降解效率下降了21.57%。这可能与原始微塑料相比,老化的微塑料的 TBBPA 吸附能力更高有关。老化的微塑料强烈改变了 TBBPA 污染的土壤特性,降低了氧化还原酶活性并影响了微生物群落组成。老化的微塑料引起的土壤氧化还原酶活性和功能微生物(例如芽孢杆菌、假杆菌和鞘氨醇)的相对丰度降低干扰了 TBBPA 的代谢途径。这项研究表明了 TBBPA 污染土壤和老化微塑料土壤的风险评估和土壤修复的重要性。
更新日期:2024-03-27
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