Shungite is a natural carbon containing material that is widely used in water treatment. Scientific research shows that shungite has good adsorption properties towards various organic compounds and heavy metals, as well as exhibiting antibacterial properties. Unfortunately, at the same time shungite releases various chemical elements into the water, including heavy metals. In this study changes in concentration of various heavy metals during drinking water treatment with one commercial and one non-commercial shungite sample were determined. Also sorption of Cu(II) with initial concentration of 2,500 μg/L onto shungite was investigated. The results showed that various heavy metals like nickel, copper, lead, cadmium, zinc, chromium and arsenic are leaching from shungite into water. Lead and cadmium exceeded the maximum acceptable concentration in drinking water for a few days, but nickel exceeded for up to 2 weeks. At the same time shungite showed good adsorption properties towards copper. Nevertheless, before using shungite in drinking water treatment, it would be advisable to assess the necessity and/or wash shungite with larger volumes of water for a longer period of time than is written in the instructions.

芒硝是一种天然的含碳材料，广泛用于水处理。科学研究表明，钨矿对各种有机化合物和重金属具有良好的吸附性能，并具有抗菌性能。不幸的是，在同一时间，钨矿将各种化学元素释放到水中，包括重金属。在这项研究中，测定了用一种商业用和一种非商业用白铁矿样品在饮用水处理过程中各种重金属浓度的变化。还研究了初始浓度为2500μg/ L的Cu（II）吸附到亚硫酸盐上。结果表明，各种重金属如镍，铜，铅，镉，锌，铬和砷都从重晶石浸入水中。铅和镉超过饮用水中的最大可接受浓度已经持续了几天，而镍却长达2周。同时，水辉石对铜表现出良好的吸附性能。但是，在使用钨矿进行饮用水处理之前，建议评估比使用说明中更长的时间和/或用更大体积的水洗涤钨矿的必要性。