Characteristics and geological significance of germanium in Taiyuan coal formation of Huainan Coalfield,Anhui,China
作者机构：School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026AnhuiChina Exploration Research InstituteAnhui Provincial Bureau of Coal GeologyHefei 230088AnhuiChina Anhui Province Green Mine Engineering Research CenterHefei 230088AnhuiChina
出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)
年 卷 期：2020年第7卷第4期
页 面：662-675页
核心收录：
学科分类：081803[工学-地质工程] 0808[工学-电气工程] 08[工学] 0818[工学-地质资源与地质工程] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程]
基 金：the Public Welfare Geological Work Project of Anhui Province(2016-g-3-33) National Natural Science Foundation of China(No.41502152) the Anhui Postdoctoral Science Foundation(2015M571940).
主 题：Germanium Modes of occurrence Chemical species ICP spectrometry Taiyuan coal formation Fufeng thrust nappe structural belt Huainan Coalfield
摘 要：HN-1#is the first fully working coring well of the Taiyuan Formation(Ty)in the Huinan Coalfield and exploration studies are currently underway on the associated resources of the coal-bearing strata.The HN-1#well is located in the Fufeng thrust nappe structural belt in the south of the Huainan Coalfield.Three coal samples from the Ty were collected from HN-1#and inductively-coupled plasma mass spectrometry and inductively-coupled plasma atomic emission spectrometry were used to determine the Ge content of each sample.Based on proximate and ultimate analyses,microscopy data,and analyses of the ash products,some important findings were made.The Ty coal samples had a relatively high total sulfur(Sud)content(4.24%),thus the coal was considered to be a lower ranked coal(high volatility bituminous coal),which also had a low coal ash composition index(k,1.87).Collodetrinite was the main submaceral of the Ty coal.Small amounts of pyrite particles were found in the coal seams of the Ty,while the contents of pyrite and algae in the top and bottom sections of the coal seam were relatively high,which meant that the swampy peat conditions which existed during the formation of the coal seams were affected by seawater;also the degree of mineralization of the coal seam was relatively high,which is consistent with reducing conditions in a coastal environment setting.Atomic force microscopy(AFM)experiments showed that the modes of occurrence of Ge in the Ty coal were mainly those for organic-bound and adsorbed Ge species.The organic carbon isotope values for the Ty coal ranged from-24.1‰to-23.8‰,with an average value of-24.0‰,which is equivalent to the value for terrestrial plants(average value-24.0‰).The Ge content of the Ty coal was 13.57 mg/kg.The Ge content was negatively correlated with volatile matter and the ash yield.
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