中高含硫量煤中硫的形态分析  

Analysis of Sulfur Forms in High Sulfur Coals

作　　者：饶竹[1] 梁汉东[1] 李艳芳[1] 

机构地区：[1]中国矿业大学资源开发工程系

出　　处：《岩矿测试》2001年第3期183-186,共4页Rock and Mineral Analysis

基　　金：中国地质科学院实验管理处基金;煤炭科学基金 (97D10 2 0 4)

摘　　要：利用超声提取、高速离心分离和加入助分散剂等手段 ,实现了中、高含硫量煤中单质硫、硫酸盐硫、硫化物硫、有机硫等主要形态硫的分步提取和顺序测定。所建分析方法测定了国家一级标样、统检样品和部分有分析结果的样品 ,其主要形态硫的加和与标准样品参考值、统检样品定值、原样品的总硫分析结果相符 ,RSD(n =3)为 0 .80 %～ 4.2 3% 。A method for analysis of sulfur forms in high sulfur coals was reported. The elemental sulfur, sulfate sulfur and pyritic sulfur in coals were sequentially extracted by hexane, 200?g/L NaCl 0.12?mol/L HCl and 2.8?mol/L HNO 3 with the method of ultrasonic extraction.After extracting pyritic sulfur the residue was used for analysis of organic sulfur. Elemental sulfur was determined by GC MS and the other forms of sulfur were analyzed by gravimetric method. The method has been applied to the sulfur forms analysis in National Standard Reference Coal Materials. The sum of sulfur in all forms in coal samples is in good agreement with the certified values or analytical results obtained by other methods with precision of 0.80%～ 4.23% RSD ( n =3).

关 键 词：硫 煤 形态分析 助分散剂 有机硫 超声提取 高速离心分离技术 

分 类 号：TQ533.1[化学工程—煤化学工程]