摘要
微量元素的赋存状态决定其在煤的加工利用过程中释放的难易程度和毒性,弄清其在煤中的赋存状态,对准确评价元素的工艺性能、环境影响、作为副产品的可能性以及在地质意义上都是十分重要的。分析了微量元素在煤中的有机亲合性,采用数理统计方法,求得了微量元素与煤中有机显微组分、三态硫、灰分之间的相关性,并在浮沉实验的基础上,分析了微量元素的存在状态,通过研究可知,Ge、Ga、U、V、Cu、Th、Pb和Zn主要以无机态存在于煤中,F和Cl可能以有机态存在为主,As无机态和有机态存在的机率相似。
Occurrences of trace elements in coals control their toxicity and release degree during coal utilizing and processing. Studying their occurrences in coals for detail is of great importance to evaluating elements properties, environmental impact and possibility of being byproduct, and has geological significance. In this paper, the organic affinity of trace elements in coals is analyzed. The correlation between trace elements and organic constituent, three state sulfur and ash yield are calculated by method of mathematical statistics, and on the basis of float sink experiment, occurrences of trace elements are studied. On the basis of the above analysis, the results show that Ge, Ga, U, V, Cu, Th, Pb and Zn are mainly associated with inorganic matter in the study coals, F and Cl may be mainly associated with organic matter and the occurrence of element As in organic matter is similar to that in inorganic matter.
出处
《地球化学》
CAS
CSCD
北大核心
2002年第1期85-90,共6页
Geochimica
基金
国家自然科学基金(40133010)
安徽省自然科学基金
中国科学院王宽诚博士后工作奖励基金(2000-0512)
中国博士后奖励基金(2000-31)
