近日，贵州大学Cheng, Wei及其课题组成员取得一项新突破。他们的研究提出了中国西南贵州煤种有害微量元素的丰度、分布及富集机制。2024年5月15日出版的《地球化学学报》发表了这项成果。

据介绍，煤层在特定地质条件下可富集多种有害微量元素。煤中有害微量元素的空间分布极不均匀，且各元素含量的分布特征不同。煤炭开采利用过程中释放的有害元素会对环境和人体造成严重危害。研究煤的地球化学特征对有害微量元素富集和分布特征的影响具有重要的现实意义。

研究人员在前人关于贵州煤炭地球化学的国内外文献基础上，统计了贵州省23个产煤大县1097个样本数据，系统总结了贵州煤炭中有害微量元素的相关研究成果，揭示了贵州煤炭中有害微量元素的总体分布和富集特征。结果表明，贵州煤中Cd、Pb、Se、Cu、Mo、U、V、As、Hg、Cr的平均含量高于中国煤和世界煤。贵州煤炭中多种有害微量元素具有较高的背景值，特别是六盘水、兴义和黔北煤田。

贵州晚二叠世煤中多种有害微量元素的富集主要与多种地质和地球化学因素的共同作用有关。陆生碎屑的供给和沉积环境可能是黔西地区有害元素富集的基本背景，而低温热液活动和火山灰沉积可能是黔西南地区有害元素富集的主要原因。

附：英文原文

Title: The abundance, distribution, and enrichment mechanism of harmful trace elements in coals from Guizhou, Southwestern China

Author: Hou, Hui, Cheng, Wei, Yang, Ruidong, Zhang, Yan

Issue&Volume: 2024-05-15

Abstract: Coal seams can enrich a variety of harmful trace elements under specific geological conditions. The spatial distribution of harmful trace elements in coal is extremely uneven, and the distribution characteristics of each element content are different. The harmful elements released in the process of coal mining and utilization will cause serious harm to the environment and the human body. It is of great resource significance to study the geochemistry of coal that affects the enrichment and distribution characteristics of harmful trace elements. Based on the domestic and foreign literature on coal geochemistry in Guizhou published by previous investigators, this study counted 1097 sample data from 23 major coal-producing counties in Guizhou Province, systematically summarized the relevant research results of harmful trace elements in the coal of Guizhou, and revealed the overall distribution and enrichment characteristics of harmful trace elements in the coal of Guizhou. The results show that the average contents of Cd, Pb, Se, Cu, Mo, U, V, As, Hg, and Cr in coal of Guizhou are higher than those in Chinese coal and world coal. A variety of harmful trace elements in the coal of Guizhou have high background values, especially in Liupanshui, Xingyi and Qianbei coalfield. The enrichment of various harmful trace elements in the Late Permian coal in Guizhou is mainly related to the combined action of various geological and geochemical factors. The supply of terrigenous debris and sedimentary environment may be the basic background of the enrichment of harmful elements in western Guizhou, while low-temperature hydrothermal activity and volcanic ash deposition may be the main reasons for the enrichment of harmful elements in southwestern Guizhou.

DOI: 10.1007/s11631-024-00694-2

Source: https://link.springer.com/article/10.1007/s11631-024-00694-2