半自动萃取仪法测定褐煤苯萃取物产率的探讨  

Discussion on the determination of yield of benzene-soluble extract in brown coals by semi-automatic method

作　　者：武增礼[1,2] 王秋湘[1,2] 陈慧珠[1,2] 朱江 

机构地区：[1]国家煤炭质量监督检验中心,北京100013 [2]煤炭科学研究总院煤炭分析实验室,北京100013 [3]山西煤炭运销集团有限公司,山西太原030002

出　　处：《煤质技术》2012年第3期8-10,共3页Coal Quality Technology

基　　金：煤炭科学研究总院青年创新基金资助项目(2010QN08)

摘　　要：结合GB/T 1575—2001《褐煤的苯萃取物产率测定方法》,对半自动萃取仪法测定褐煤苯萃取物产率准确度的影响因素进行探讨,提出应采用聚四氟乙烯挤出管作为连接萃取室和冷凝器之间的软管,建议小滤纸的方块大小改为60mm×60mm,指出测定样品的同时应增加空白值的测定。According to the National Standard GB/T 1575- 2001 Determination of yield of benzene-soluble extract in brown coal, the influencing factors on the accuracy of determination of yield of benzene-soluble extract in brown coals by semi-automatic method was discussed in this paper. It was put forward that the PTFE extrusion pipe should be used as the hose to connect the extraction cell and condenser, and the size of filter papers should be changed as 60 mm × 60 ram. Meanwhile, it was indicated that the blank determination would be necessary for the simultaneous determination of coal samples.

关 键 词：半自动萃取仪 褐煤 苯萃取 产率 

分 类 号：TQ531[化学工程—煤化学工程]