摘要
以吉林省桦甸油页岩为研究对象,采用电感耦合等离子质谱(ICP-MS)和化学逐级提取方法相结合,对油页岩中稀土元素的分布特征以及油页岩中稀土元素的赋存状态进行研究。结果表明,相对于中国煤,桦甸油页岩表现为轻稀土元素富集程度高于重稀土元素。油页岩中稀土元素与陆源碎屑岩关系密切,且陆源物质的供应相对比较稳定。轻重稀土间分馏明显,属于轻稀土中度富集型。稀土元素主要赋存在矿物质中(硫化物结合态、碳酸盐结合态、铁锰氧化物结合态及硅铝化合物结合态),硫化物结合态更倾向于对轻稀土元素的富集而碳酸盐结合态、铁锰氧化物结合态及硅铝酸盐结合态则倾向于对重稀土元素的富集。可交换态和有机质中稀土元素含量甚微。不同的沉积环境对不同的物质中的稀土元素的分馏效应不同。
Distribution characteristics and occurrence modes of rare earth elements（REE） in oil shale from Huadian,Jilin province were determined by sequential chemical extraction process.Content of REE were determined by inductively coupled plasma-mass spectrometry（ICP-MS）.The results show that the enrichment of light rare earth elements（LREE） in Huadian oil shale is richer than that of heavy rare earth elements（HREE）,relative to those in coals from China.The REE in oil shale are positively correlated with terrigenous clastic rock,and the supply of terrigenous materials is relatively stable.The fractionation between LREE and HREE is clear and shows a moderate LREE-enriched pattern.The occurrence of rare earth elements are mainly in minerals fractions.The enrichment of sulfide fractions inclines to LREE;besides,carbonate fractions,ferromanganese oxyhydroxides bound fraction and aluminosilicate bound fraction are more inclined to enrich HREE.Moreover,here is lack of the contents of rare earth elements in exchangeable and organic matter fractions.Additionally,the fractionation effects of rare REEs in different substances have some differences under various sedimentary environments.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2011年第7期489-494,共6页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金(50876018)
中国电机工程学会电力青年科技创新项目
关键词
稀土元素
桦甸油页岩
赋存状态
rare earth elements
oil shale
mode of occurrence
作者简介
作者简介：柏静儒（1973-），女，吉林长岭人，副教授（博士）。研究方向为油页岩综合利用，E-mail：bai630@mail．nedu．edu．cn。
联系作者：王擎，Tel：0432-4807366，Fax：0432-4806281，E—mail：rszx@mail．nedu．edu．cn。
