In this study Cr(tot), Cr(VI), major and trace elements were determined in groundwater of northern sector of the Pollino Massif (southern Italy). The investigated area is characterized by ophiolitic rocks consisting of metabasites, shales and calcschists and fractured serpentinites. Two main hydro-facies were observed, reflecting low temperature water–rock interaction. The Mg-HCO₃ hydrofacies is due to the weathering of serpentinites, Ca-HCO₃ groundwaters are linked to the interaction with calcschist and metabasites. High Cr(VI) concentrations were detected, exceeding the maximum admissible concentrations by Italian regulation, due to the release of Cr(III) from ophiolitic rocks into water and its oxidation to the hexavalent state. Remediation tests were carried out using two synthetized nanomaterials, Fe(0) and magnetite, characterized by a mean size lower than 50 nm. The experiments were conducted at fixed nanoparticles/Cr(VI) molar ratio and according to previous studies. In addition, the kinetic data were interpreted with a suitable mathematical model.

在这项研究中，Cr（tot），Cr（VI），主要和微量元素是在Pollino Massif（意大利南部）北部地区的地下水中测定的。被调查区域的特征是由变质岩，页岩和方解石组成的蛇绿岩以及破碎的蛇纹岩。观察到两个主要的水相，反映了低温水岩相互作用。Mg-HCO ₃水相是由于蛇纹岩，Ca-HCO ₃的风化地下水与降钙石和代谢产物的相互作用有关。检测到高的Cr（VI）浓度，超过了意大利法规规定的最大允许浓度，这是由于Cr（III）从脂石岩中释放到水中并氧化成六价态。使用两种合成的纳米材料Fe（0）和磁铁矿进行了补救测试，其特征是平均尺寸小于50 nm。根据固定的纳米颗粒/ Cr（VI）摩尔比并根据先前的研究进行实验。另外，用合适的数学模型解释动力学数据。