饮用水铅的控制基础 配电系统基于铅（II）化学。在里面 然而，近年来，铅（IV）氧化物已被确定 在分销系统中，这表明他们可能 与预测和控制相关 消费者水龙头处的铅浓度。因此 更好地理解Pb（IV）的化学可以 对水务管理者来说，这是非常有价值的 治疗决定。 这项研究表明，两种Pb（IV）二氧化物 多晶型铂白云石和镁橄榄石可以在 氯化水和这些固体不易溶解 一般来说，铅（II）矿物比历史上用于铅的矿物要多 控制策略。这些发现对我们的研究有启示 考虑改用其他供水方式的供水商 消毒剂类型或进行其他治疗改变 这可能会影响氧化还原电位。 如果Pb（IV）氧化物 在他们的分配系统中，氧化还原的任何变化 潜在的（例如，将消毒剂从游离氯中切换 氯胺）可能完全减少这些固体 以更易溶解的Pb（II）形式存在，可能导致 铅浓度升高。包括45个参考文献、表格和图表。

The foundation for lead control in drinking water distribution systems is based on Pb(II) chemistry. In recent years, however, Pb(IV) oxides have been identified in distribution systems, suggesting that they may be important relative to predicting and controlling lead concentrations at the consumer's tap. Therefore, a better understanding of the chemistry of Pb(IV) can be valuable to water utility managers as they make treatment decisions. This research shows that the two Pb(IV) dioxide polymorphs plattnerite and scrutinyite can form in chlorinated water and that these solids are less soluble in general than Pb(II) minerals historically used for lead control strategies. These findings have implications for water suppliers considering switching to a different type of disinfectant or making other treatment changes that could affect redox potential. If Pb(IV) oxides are in their distribution systems, any changes in redox potential (e.g., switching disinfectant from free chlorine to chloramines) could possibly fully reduce those solids to more soluble Pb(II) forms, potentially resulting in elevated lead concentrations. Includes 45 references, table, figures.