Formation mechanism of strontium mineral water in Weixin Town,Minxian County,Gansu Province
Objectives:Analysis of the abundance characteristics of strontium elements in study area,the mineral composition of the rocks within the strata identified,and analyzed the chemical structure of the main minerals rich in strontium elements in the minerals.The water seepage into the rock and soil fissures,aqueous rock reactions with strontium-rich minerals.Then,strontium mineral water formed when more strontium elements are dissolve into the water.Methods:Adopting the analysis method of traceability,regional comparative analysis of the abundance characteristics of strontium elements in various strata of rock and soil bodies in the study area,and analysis of strontium-containing minerals within the main rocks.based on the structure of the main strontium-rich minerals,strontium ions therein dissolve into the water by way of substitution with ions similar in nature,and the determination of Sr2+reaches the strontium-type natural mineral water standard for drinking purposes.Results:The strontium content in the main strata that in the slate,feldspar quartz sandstone and Quaternary residual slope gravel soil in the study area is high,low,high,etc.relative to the region.The slate has a high clay mineral content,and the main components of clay minerals are montmorillonite and illite,which have high strontium content.The structure of montmorillonite makes it easy for strontium in it to replace and displace with elements of similar nature,and dissolve into the water,forming a water supply with high strontium content.Conclusions:Precipitation infiltrates the surface into the fissures and pores of strontium mineral-rich rock and soil bodies.Minerals undergo aqueous rock reactions such as leaching,dissolution,and ion exchange with carbon dioxide and water.The main anions and cations dissolved in the water are HCO3,Ca2+and Mg2+.The strontium content in the rock formation is generally higher,and more Sr2+is dissolving into the water,which can reach the standard of strontium-type natural mineral water for drinking.This results in strontium mineral water with a water chemistry type of calcium magnesium bicarbonate.
Weixin Town Minxian Countyabundancewater rock reactionionsstrontium
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