Study on speciation of soil arsenic at arseniasis area in western Jilin province

The total arsenic and the speciation of soil arsenic are discussed in this paper by sampling 36 surface soil samples located at arseniasis area in western Jilin province, i.e., Taonan city and Tongyu county. The result shows that the order of soil arsenic speciation in Taonan city is Residual> Weakly bound to organic matter > Fe/Mn oxide bound> Carbonate > Water soluble > Strongly bound to organic matter >Exchangeable, The order of soil arsenic speciation in Tongyu county was Residual> Weakly bound to organic matter > Fe/Mn oxide bound> Carbonate > Water soluble > Exchangeable > Strongly bound to organic matter. Taken together, residue is the main speciation at arseniasis area in western Jilin province.