Abstract：
Microplastics (MPs) and polycyclic aromatic hydrocarbons (PAHs) are toxic contaminants that have been found in marine ecosystems. This review aims to explore the sources and mechanisms of PAHs and MPs mixed contamination in marine environments. Understanding the released sources of PAHs and MPs is crucial for proposing appropriate regulations on the release of these contaminants. Additionally, the mechanisms of co-occurrence and the role of MPs in distributing PAHs in marine ecosystems were investigated in detail. Moreover, the chemical affinity between PAHs and MPs was proposed, highlighting the potential mechanisms that lead to their persistence in marine ecosystems. Moreover, we delve into the various factors influencing the co-occurrence, chemical affinity, and distribution of mixed contaminants in marine ecosystems. These factors, including environmental characteristics, MPs properties, PAHs molecular weight and hydrophobicity, and microbial interactions, were critically examined. The co-contamination raises concerns about the potential synergistic effects on their degradation and toxicity. Interesting, few studies have reported the enhanced photodegradation and biodegradation of contaminants under mixed contamination compared to their individual remediation. However, currently, the remediation strategies reported for PAHs and MPs mixed contamination are scarce and limited. While there have been some initiatives to remove PAHs and MPs individually, there is a lack of research specifically targeting the removal of mixed contaminants. This deficiency highlights the need for further investigation and the development of effective remediation approaches for the efficient remediation of PAHs and MPs from marine ecosystems.
摘要：
微塑料（MPs）和多环芳烃（PAHs）是海洋生态系统中发现的有毒污染物。本文旨在探讨海洋环境中PAHs和MPs混合污染的来源和机制。了解PAHs和MP的释放来源对于提出有关这些污染物释放的适当法规至关重要。此外,详细研究了海洋生态系统中PAHs的共现机制和MPs在分布中的作用。此外，提出了PAHs和MPs之间的化学亲和力，强调导致它们在海洋生态系统中持续存在的潜在机制。此外，我们深入研究了影响共现的各种因素，化学亲和力，以及混合污染物在海洋生态系统中的分布。这些因素,包括环境特征，国会议员的财产，PAHs分子量和疏水性,和微生物的相互作用，进行了严格的检查。共污染引起了对其降解和毒性的潜在协同作用的担忧。有趣,很少有研究报道与单独的修复相比，混合污染下污染物的光降解和生物降解增强。然而,目前,报告的PAHs和MP混合污染的修复策略很少且有限。虽然有一些单独删除PAHs和国会议员的举措，缺乏专门针对混合污染物去除的研究。这一缺陷突出了需要进一步调查和开发有效的修复方法，以有效修复海洋生态系统中的PAHs和MPs。
