Abstract：
Metals in the drinking water distribution system (DWDS) play an important role on the fate of disinfection by-products (DBPs). They can increase the formation of DBPs through several mechanisms, such as enhancing the proportion of reactive halogen species (RHS), catalysing the reaction between natural organic matter (NOM) and RHS through complexation, or by increasing the conversion of NOM into DBP precursors. This review comprehensively summarizes these complex processes, focusing on the most important metals (copper, iron, manganese) in DWDS and their impact on various DBPs. It organizes the dispersed \'metals-DBPs\' experimental results into an easily accessible content structure and presents their underlying common or unique mechanisms. Furthermore, the practically valuable application directions of these research findings were analysed, including the toxicity changes of DBPs in DWDS under the influence of metals and the potential enhancement of generalization in DBP model research by the introduction of metals. Overall, this review revealed that the metal environment within DWDS is a crucial factor influencing DBP levels in tap water.
摘要：
饮用水分配系统（DWDS）中的金属对消毒副产物（DBPs）的命运起着重要作用。它们可以通过几种机制增加DBPs的形成，例如提高活性卤素物质(RHS)的比例，通过络合催化天然有机物（NOM）和RHS之间的反应，或通过增加NOM转化为DBP前体。这篇综述全面总结了这些复杂的过程，专注于最重要的金属(铜，铁,DWDS中的锰)及其对各种DBPs的影响。它将分散的“金属DBPs”实验结果组织成一个易于访问的内容结构，并展示了它们潜在的共同或独特机制。此外，分析了这些研究成果的实际应用方向，包括DBP在金属影响下的毒性变化以及DBP模型研究中通过金属的引入可能增强的泛化性。总的来说,这篇综述表明，DWDS中的金属环境是影响自来水中DBP水平的关键因素。
