【摘要】 应用ICP MS测定了从 1998年 10月至 1999年 9月共 12个月的北京西北郊降尘中稀土元素的浓度 ,同时测定了从 1999年 4月至 6月间 8次降雨中的稀土元素的浓度 .对降尘和降雨中稀土元素的分布模式进行了初步分析 .结果表明降尘和降雨中稀土元素的分布与我国土壤稀土元素的分布模式基本一致 ,说明降尘和降雨中的稀土元素主要来源于地表土壤更多还原

【Abstract】 The dustfall samples from Oct. 1998 to Sep 1999 and rainwater samples from Apr. to Jun.1999 were collected in Beijing. The rare earth elements (REEs) concentrations in these samples were determined, and the REEs distribution patterns were preliminarily analyzed too. The results show that the REEs distribution patterns are similar both in these samples and in soil in China, which indicates that the sources of REEs in dustfall and rain samples are mainly come from topsoil.更多还原