从大西洋沿岸平原含水层的含水层储存和回收（ASR）井中回收饮用水的最严重问题之一是，与含有溶解氧（DO）的补给水接触时，含金属矿物的溶解。含金属矿物的溶解会将高浓度的金属，尤其是铁和锰释放到储存的水中。天然地下水通常不含溶解金属，对可能出现的问题几乎没有警告。含金属硫化物和碳酸盐，如黄铁矿（FeS2）和菱铁矿（FeCO3），在大西洋海岸平原的含砂含水层中相对普遍。 例如，对位于新泽西州的ASR设施伊夫沙姆市政公用事业管理局Kings Grant现场的上波托马克-拉瑞坦-马戈西（PRM）含水层的岩芯样本进行的分析表明，黄铁矿占大块岩石基质的1%。试验循环分别在有或没有使用化学药剂对补给水进行预处理以就地稳定黄铁矿的情况下进行。除了使补给水的pH值高于黄铁矿的溶解度极限外，NaOH中的OH自由基与黄铁矿反应，形成氢氧化铁涂层。这种涂层将矿物颗粒与含水层环境隔离开来，防止溶解。该涂层还吸附包括溶解铁在内的金属离子（作为一种在地下水中迁移的表面沉淀反应）。 包括4个参考文献、图表。

One of the most serious concerns for recovering drinking quality water from Aquifer Storage and Recovery (ASR) wells in the aquifers of the Atlantic Coastal Plain is the dissolution of metal-bearing minerals upon contact with recharge water containing dissolved oxygen (DO). Dissolution of metal-bearing minerals can release elevated concentrations of metals, particularly iron and manganese into the stored water. Often native groundwater is devoid of dissolved metals, providing little warning of a possible problem. Metal-bearing sulfides and carbonates such as pyrite (FeS2) and siderite (FeCO3) are relatively pervasive in the sand aquifers of the Atlantic Coastal Plain. As an example, analysis of core samples from the Upper Potomac-Raritan-Magothy (PRM) Aquifer at the Evesham Municipal Utilities Authority's Kings Grant site, an ASR facility in New Jersey, indicated that pyrite comprised 1 percent of the bulk rock matrix. Test cycles were performed with, and without pretreating recharge water with a chemical agent to stabilize pyrite in situ. In addition to elevating pH of the recharge water above the solubility limit of pyrite, the OH radical in NaOH reacts with pyrite to form ferric oxyhydroxide coating. This coating isolates the mineral grain from the aquifer environment, preventing dissolution. This coating also adsorbs metal ions including dissolved iron (as a surface precipitation reaction migrating in the groundwater. Includes 4 references, figures.