摘要
评述了煤中氯的研究现状，用仪器中子活化分析方法测定了中国４５个晚古生代全层煤样氯的质量分数，提出了煤中氯的逐级化学提取方法．研究表明，与其它国家相比中国煤不是高氯煤；平朔煤中氯以水溶态为主（４６．７０％～９１．７８％），其次为与煤大分子结合的有机氯（５．２０％～４８．３８％），再次为呈离子交换态的有机氯（４．９２％～１８．７８％）；煤灰分越低，有机氯质量分数相对越高．
The current advance of study on chlorine in coal is reviewed. The concentrations of chlorine in 45 Chinese coal samples are determined on whole coal basis using instrumental neutron activation analysis(INAA). The sequential chemical extraction method is put forward to determine the occurrence modes of chlorine in coal. The research shows that Chinese coals are not chlorine rich ones compared with those from other countries. In coal from Pingshuo Antaibao Opencast Mine, 46.70%～91.78% of chlorine is in water soluble state, 5.20%～48.38% of it is organic chlorine bonded to coal molecules, and only 4.92%～ 18.78% is organic one in an ion exchange state; the proportions of organic chlorine increase with the decrease in ash of coal.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
1999年第1期61-64,共4页
Journal of China University of Mining & Technology
基金
国家自然科学基金
煤炭科学基金
关键词
煤
氯
逐级化学提取
地球化学
Coal, chlorine, sequential chemical extract
