地质学报2024，Vol.98Issue(8)：2472-2485,14.DOI:10.19762/j.cnki.dizhixuebao.2024332
不同变质程度煤中镜质组的元素分布特征:基于Raman和原位微区XRF分析
Distribution of elements in vitrinite of coals with different metamorphic degrees:Based on the Raman and μ-XRF analyses
摘要
Abstract
This study presents a detailed investigation into the relationship between elemental distribution and macerals in coal. Six coal samples,exhibiting a range of vitrinite reflectances (1.26％～2.03％),were collected from the Malan,Xiqu,Tunlan,Dongqu,Ximing,and Duerping coal mines in Xishan coalfield,Taiyuan. A laser confocal micro-Raman spectrometer (Raman) was used to precisely locate vitrinite in the samples. Subsequently,microscopic X-ray florescence spectrometry was applied to analyze the correlation between elemental distribution and Raman spectroscopic characteristics. The results show the presence of numerous nano-size minerals within vitrinite. These minerals significantly influence the distribution of elements in vitrinite,despite the use of Raman spectroscopy for precise vitrinite localization. Elements such as Al,Si,K,Ti,V,Fe,Co,and Ca mainly occurred in these nano-size minerals. Conversely,Ni,Zn,Ga,Ge,Br,and S exhibited a strong affinity for the vitrinite itself.关键词
西山煤田8号煤/不同变质程度煤/镜质组/Raman/μ-XRFKey words
No.8 coal in Xishan coalfield/coal with different metamorphic degrees/vitrinite/Raman/μ-XRF引用本文复制引用
刘超,谢鹏鸿,孙蓓蕾,常洋梅..不同变质程度煤中镜质组的元素分布特征:基于Raman和原位微区XRF分析[J].地质学报,2024,98(8):2472-2485,14.基金项目
本文为国家重点研发计划项目(编号2021YFC2902002)、国家自然科学基金项目(编号42172193,42372203)和山西省科技创新人才团队专项项目(编号202304051001028)联合资助的成果. （编号2021YFC2902002）
