SUN Haoran, XU Siqin^*, REN Hongyang, XU Dingsong, AN Yanling

（Key Laboratory of Karst Environment and Geohazard Prevention of Ministry of Education, Guizhou University, Guiyang 550003, China）

Abstract：Leaching effect on arsenic and antimony in soil of antimony ore area in Guizhou Province, China by tartaric and malic acid were studied. Experimental results show that the leaching efficiency of soil arsenic and antimony by tartaric and malic acid increases significantly with increasing of concentrations of acids and increases gradually with increasing leaching time. The best leaching efficiency reaches after 8h of leaching time. Experimental results also show that the leaching effect of tartaric and malic acid gradually decreases with increasing pH from 3 to 12..

Keywords：Tartaric acid; malic acid; chelating agent; leaching; Sb; As

EARTH AND ENVIRONMENT Vol. 44, No.3 Tot No.311, 2016, Page 304-308