Major ions, trace elements, and isotope concentrations\nwere measured in 11 representative groundwater\nsamples that were collected from a series of aquifers\nin the Wugou coal mine, Anhui Province. The geochemical\ncharacteristics of the groundwater samples were examined\nusing conventional graphical and multivariate statistical\napproaches, and the results showed that almost all of the\ngroundwater samples collected from the coal-bearing\naquifer were the Na-SO4 type, whereas the samples from\nthe Quaternary and the limestone aquifer were the Ca-SO4\nand Na-Cl types, respectively. The groundwater in the\nstudy area is not suitable for drinking without treatment\nbecause of the higher values of total dissolved solids and\nother parameters, whereas the lower value of the sodium\nadsorption ratio indicates that it can be used for irrigation.\nThe total rare earth element concentrations ranged from\n0.0398 to 0.1874 mg/L, and had an average of 0.075 mg/L.\nThere were negative cerium and positive europium\nanomalies in the groundwater. The dD and d18O values in\ngroundwater ranged from -9.01 to -8.81 %, and from\n-74.7 to -71.4 %, respectively. Meteoric water with\nvariable degrees of evaporation is the main source of the\ngroundwater in the coal-bearing aquifer.
Loading....