阳泉矿区15号煤中硼元素地球化学特征及古盐度分析Coal No. 15 Coal Boron Geochemical Features and Paleosalinity Analysis in Yangquan Mining Area
祝金峰,郑启明,黄波,石松林
摘要(Abstract):
煤中硼含量影响因素较多,对硼元素开展的研究既具有地质意义,又具有环境意义。以阳泉矿区15号煤为研究对象,采用电感耦合等离子质谱法测定煤中硼含量。结果表明,阳泉矿区15号煤中硼含量平均为39. 1μg/g,明显低于中国煤和世界煤含量,具有显著的无机亲和性,主要赋存于煤中黏土矿物。采用多元线性回归分析方法计算有机硼和无机硼含量,结果表明阳泉矿区15号煤中无机硼29. 1μg/g,占总硼含量的73. 7%。采用硼元素法计算阳泉矿区15号煤沉积古水体盐度,结果表明古盐度平均68. 5‰,属于超盐水,这主要与泥炭聚集受海水影响以及泥炭聚集后的大规模海侵作用有关。
关键词(KeyWords): 煤;黏土矿物;沉积环境;阳泉矿区
基金项目(Foundation): 国家自然科学基金资助项目(41502154);; 河南省科技公关项目(182102310016)
作者(Author): 祝金峰,郑启明,黄波,石松林
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