The Geochemistry Of Antimony In Longbaiwei Karst Groundwater System Of Qinglong,Guizhou Province

Antimony is widely distributed in the environmental compartments as a typically toxic heavy metal due to its chronic toxicity and possible carcinogenic.It is an emerging global environment pollutant.For a long time,people pay less attention to the geochemical behavior of antimony in karst groundwater.Therefore,reserching on hydrochemical characteristics,variation,geochemical characteristics of antimony and other elements of water bodies under antimony mining not start in karst system,to provide a theoretical basis for the latter control of Sb emissions,governance and protection of Longbaiwei underground river,and,to satisfy the human survival,life and production,development needs provide important theoretical significance and practical value.The Longbaiwei underground river development in the Bihenying and Puan county area,the length of 39 Km,the catchment area of 326Km2,the development pipeline grid showed,underground river depth greater than 100 meters,the underground pipeline gradient of 15 %.The basin is located in the folder containing in the Permian Maokou Formation of strong water rich area and the Quaternary.Atmospheric precipitation and surface water by karst depressions,joint fissures and shallow groundwater supply the underground river.Based on the Longbaiwei karst groundwater system in Qinglong County of Guizhou province as the research object,collected the underground river system in karst groundwater,jointed water in clastic rocks,the Quaternary pore water,surface water and coal mine water,analyzed the2014~2016 three years of water chemical and antimony content variation,water chemistry type and the spatial variation of the karst aquifer system,discussed the underground river recharge runoff discharge process of antimony migration in the karst system transformation pattern and spatial variation characteristics.Understanding the main are as follows:1.Different aquifers have different hydrochemical characteristics and water quality types.The underground river through the multi source recharge and confluence in the karst pipeline,along with the scour and long distance migration of the Maokou Formation limestone,the contents of the water chemical components change,and the hydrochemical types tend to be unified.2.There are differences in the amount of antimony in various aquifer in the study area.The Bihenying Formation has a higher antimony values,the maximum value reached 4.34?g·L-1,reflecting antimony in Bihenying Formation has a high background value.In Maokou Formation is the lowest.Karst water antimony content is low,the average value is 0.49 ?g·L-1.The coal mine wastewater content of antimony range 0.17~0.68 ?g·L-1.3.The migration and transformation of antimony in the underground river system.The upper reaches of the mine water carrying high levels of iron and manganese contaminated water into the underground river.The migration and transformation of antimony in the underground river karst system is affected by the acid-base properties,redox,the adsorption of iron and manganese oxides,the source of recharge of the aquifer,the dilution and other aspects.