%0 Journal Article
%T CHEMICAL SPECIES AND EQUILIBRIA OF CADMIUM IN SOIL SOLUTIONS<br>土壤溶液中镉的化学形态及化学平衡研究
%A Xiong Liming
%A <br>熊礼明
%J 环境科学学报
%D 1993
%I 
%X A simple chemical equilibrium model was developed to speciate Cd in soil solutions of red earth, yellow-brown earth and yellow fluro-aquic soil peviously amended with Cd. Results showed that Cd2+, CdCl+, and CdSO40 were the dominant species of Cd in soil solution. Limimg the red earth reduced free Cd2+ and increased CdSO40 in the species composition. Adding chlorides decreased soil pH and desorbed Cd from solid matrix, and CdCl+ and CdCl20 rised dramatically. Solubility diagram suggested that the soil solution was far undersaturated with respect to all Cd minerals hence Cd activity in soil solution was controlled by sorption-desorption equilibrium of Cd between soil solid and solution phases.
%K cadmium
%K chemical equilibrium model
%K soil solution
%K species<br>土壤
%K 溶液
%K 化学形态
%K 化学平衡
%K 镉
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=D10AA54D1273170E70567CD2BE9B5570&yid=D418FDC97F7C2EBA&vid=FC0714F8D2EB605D&iid=0B39A22176CE99FB&sid=2DBBF45CC176713E&eid=3F0AF5EDBC960DB0&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=8&reference_num=1