CAJ | 학술논문

以鄂尔多斯盆地西缘石炭-二叠系和侏罗系延安组煤样中Ga、Ru、W、Li、Ge、U等多种微量元素测试结果为基础,分析研究了煤中微量元素的富集特征、展布规律以及各微量元素之间的相关性.研究表明,石炭-二叠系煤中微量元素主要存在于黏土矿物中,其中V、Cr、Co、Ni、Rb、Cs、Ba、Tl等8种元素之间高度正相关,Li、Ga、REE之间正相关,除Ga和REE元素外,Sr与其他元素均为负相关;侏罗系煤中,Li、Sc、Cr、Zn、Ga、Rb、In、Sb、Cs、Pb、Bi、Th、U、REE之间高度正相关.石炭-二叠系煤中微量元素的含量普遍高于侏罗系煤中微量元素含量,是因为石炭-二叠系属海陆交互相,侏罗系为陆相,海洋浮游生物能富集一些微量元素,提供较丰富的物质来源,更主要的是海水改变了泥炭沼泽的pH值、Eh值和H2S含量,产生特定的地球化学障,使之有利于微量元素富集.
이악이다사분지서연석탄-이첩계화주라계연안조매양중Ga、Ru、W、Li、Ge、U등다충미량원소측시결과위기출,분석연구료매중미량원소적부집특정、전포규률이급각미량원소지간적상관성.연구표명,석탄-이첩계매중미량원소주요존재우점토광물중,기중V、Cr、Co、Ni、Rb、Cs、Ba、Tl등8충원소지간고도정상관,Li、Ga、REE지간정상관,제Ga화REE원소외,Sr여기타원소균위부상관;주라계매중,Li、Sc、Cr、Zn、Ga、Rb、In、Sb、Cs、Pb、Bi、Th、U、REE지간고도정상관.석탄-이첩계매중미량원소적함량보편고우주라계매중미량원소함량,시인위석탄-이첩계속해륙교호상,주라계위륙상,해양부유생물능부집일사미량원소,제공교봉부적물질래원,경주요적시해수개변료니탄소택적pH치、Eh치화H2S함량,산생특정적지구화학장,사지유리우미량원소부집.
On the basis of multiple trace elements tested results of Ga, Ru, W, Li, Ge and U from Ordos Basin western margin Permo-Carboniferous Yanan Formation coal samples, analytically studied the study area coal trace elements enrichment features, distribution pattern and interdependency between them. The study has shown that in Permo-Carboniferous coals, 8 elements of V, Cr, Co, Ni, Rb, Cs, Ba and Ti have high level positive correlation mutually, Li, Ga and REE positive correlation mutually, mainly existed in clay miner-als, besides Ga and REE elements, Sr and other elements are all negatively correlated. In Jurassic coals, Li, Sc, Cr, Zn, Ga, Rb, In, Sb, Cs, Pb, Bi, Th, U and REE have high level positive correlation mutually. Trace element contents in Permo-Carboniferous coals are gen-erally higher than in Jurassic coals, because of Permo-Carboniferous belongs to marine-terrestrial facies, while Jurassic terrestrial fa-cies. Marine plankton can enrich some trace elements, provide rather abundant material source, more importantly is the sea water changed peat bog pH value, Eh value and H2S content, produce particular geochemical barrier to the advantage of trace elements en-richment.