摘要
泉州湾潮间带表层沉积物中稀土元素含量分析表明,泉州湾潮间带表层沉积物稀土元素平均含量为278.82 mg.kg-1,高于中国陆架海底沉积物.泉州湾潮间带表层沉积物稀土元素的球粒陨石配分模式均呈现Eu负异常,模式具负斜率,表明沉积物物质来源主体是大陆地壳.稀土元素含量呈现由内湾向外湾减少的分布趋势.δEu值在外湾沉积物具有较高Eu负异常,在内湾相对Eu负异常较低.泉州湾污染可能是造成沉积物稀土元素含量空间分异的一个重要原因.
Analyses of rare earth elements （REEs） in surface sediment samples collected from inter-tidal zone of Quanzhou bay were conducted using Inductively Coupled Plasma-Mass-Spectrometry （ICP-MS）. The results show that the average content of REEs in surface sediments of inter-tidal zone of Quanzhou bay is 278.82 mg.kg-1, and the REEs enrichment is higher than China continental-shelf marine sediment. The chondrite-normalized REE patterns were characterized by the negative Eu abnormally and the negative gradient, indicating that the main material sources of surface sediments are of matter from the mainland earth crust. There is a decline of REEs from inner bay to outer Bay. And there is a high negative europium anomaly of 8Eu value in outer bay, while a relatively low Eu negative anomaly in inner bay. The spatial variation of rare earth elements in sediments may be caused by contamination of Ouanzhou bay.
出处
《环境化学》
CAS
CSCD
北大核心
2011年第12期2086-2091,共6页
Environmental Chemistry
基金
国家自然科学基金项目(21077036)
东华理工大学核资源与环境教育部重点实验室开放基金项目(101101)资助
关键词
泉州湾
稀土元素
表层沉积物
地球化学
rare earth elements, geochemistry, intertidalite sediment, Quanzhou bay.
