摘要
铬是煤中的潜在毒害微量元素,在煤利用过程中铬会发生迁移与转化,并可能释放出造成环境和人体健康的危害。本文分析了中国煤中铬的含量、分布规律、赋存状态及其富集因素等地球化学特征,指出中国煤中铬的含量为0.02～971 μg/g,平均为17.18 μg/g;煤中铬的赋存状态多样,主要以无机态存在;煤中铬的含量和赋存状态受成煤环境、成煤植物和后生地质作用等因素的影响。
Chromium is one of the potentially toxic trace elements （PTTEs） in coal, as it could be migrated and released into the environment during the coal utilization with harmful impact on the environment and human beings. In this paper, the authors have analyzed the contents, distribution, modes of occurrence, and the enrichment factors of chromium in Chinese coals, based on the reported geochemical data of Cr in coal. The Cr content in Chinese coals ranges from 0.02 to 971 μg/g, with an average of 17.18 μg/g, which is more than that of the world coals （10 μg/g）. Chromium, occurred as various modes of occurrences in coal, is mainly associated with minerals. The content, distribution and mode of occurrence of chromium in coals are influenced by many factors, such as coal-forming environment, coal-forming plants, and the epigenesis.
出处
《矿物岩石地球化学通报》
CAS
CSCD
2005年第3期239-244,共6页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家自然科学基金资助项目(40273035)安徽理工大学博士基金资助项目(2003YB02)
关键词
铬
赋存状态
富集因素
中国煤
chromium
contents
modes of occurrence
enrichment factors
Chinese coal
