Study on the characteristics of heavy metal pollution in groundwater in a Carlin-type gold mining area in Northwest Guangxi
In order to find out the characteristics of heavy metal pollution in groundwater environment of a Carlin-type gold mining area in Northern Guangxi,the groundwater in the mining area was sampled and mo-nitored in the wet and dry seasons,and the monitoring results were evaluated by the standard index method.The results showed that the groundwater in the study area was polluted by heavy metals.The main heavy metal pollution factors were arsenic,lead and antimony,and the degree of pollution from high to low was ar-senic,lead and antimony.The pH value,copper,zinc,cadmium,chromium(hexavalent)and mercury of groundwater content meet the requirements of standard of'Groundwater Quality Standard'(GB/T 14848-2017)m.The pollution range is mainly in the mining area,and there is no pollution to the external envi-ronment groundwater.
heavy metal pollutioncarlin gold minegroundwaterheavy metal pollutionstandard index methodNorthwest Guangxi