摘要
对2006年4月北京降尘进行了10Be,14C和δ13C等项分析,初步结果显示:降尘10Be浓度与黄土比较接近,降尘中黑炭的δ13C数值与黄土有机质接近;降尘中黑炭的14C年龄大致可划分为两个特征区间,反映了降尘物质有两大源区。本工作在刘东生先生指导下完成,谨以此文祝贺刘先生九十华诞。
^10Be, ^14C, and δ^13C in 12 samples of the falling dust collected in Beijing in the middle of April, 2006 are analyzed. Preliminary results indicate that the contents of ^10Be in the failing dust are similar to those in loess, and the δ^13C values in the failing dust are similar to those of organic matter in loess. Two intervals can be divided by ^14C ages of black carbon in the failing dust, reflecting two different sources of the dust. This work is completed under the direction of Prof. Liu Tungsheng and We＇d like to express our sincerest congratulations and best wishes to him on his 90th birthday.
出处
《第四纪研究》
CAS
CSCD
北大核心
2007年第6期919-921,共3页
Quaternary Sciences
基金
国家自然科学基金项目(批准号:40231015和40473002)
国家重点基金研究发展规划项目(批准号:2005CB422004)
中国科学院知识创新项目(批准号:KSCX2-SW-133)资助
