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QDTA/T/EGD/GC在线联用技术X.菱铁矿、高岭石、白云石、方解石、石英五元混合矿物的组成分析
引用本文:蔡根才.QDTA/T/EGD/GC在线联用技术X.菱铁矿、高岭石、白云石、方解石、石英五元混合矿物的组成分析[J].华东理工大学学报(自然科学版),1995(2).
作者姓名:蔡根才
作者单位:华东理工大学分析测试中心
摘    要:应用已建立的DTA/T/EGD/GC在线联用技术及其装置,在CO_2和空气下鉴定了白云石中的微量菱铁矿;在空气下测定了方解石的纯度;在N_2气下对配合的菱铁矿、高岭石、白云石、方解石、石英五元混合矿物的组成进行了分析。实验结果表明:白云石/方解石(1:1)的混合矿在CO_2下两者热分解释放出CO_2的三个吸热效应,在DTA曲线上皆可显示其对应的峰形特征而得到判别。

关 键 词:差热分析  气相色谱  逸气检测  菱铁矿  白云石  方解石

QDTA/T/EGD/GC On-Line Coupled Simultaneous Technique X. Composition Analysis of Five-Component Mixed Minerals of Siderite,Kaolinite,Dolomite,Calcite and Quartz
Cai Gencai.QDTA/T/EGD/GC On-Line Coupled Simultaneous Technique X. Composition Analysis of Five-Component Mixed Minerals of Siderite,Kaolinite,Dolomite,Calcite and Quartz[J].Journal of East China University of Science and Technology,1995(2).
Authors:Cai Gencai
Abstract:By applying on established DT A/T/EGD/GC on-line coupled simultaneoustechnique and relevant equipments,the trace siderite in the dolomite was identified in CO_2 andair and the purity of calcite was determined in air.The composition analysis of five-compo-nent mixed minerals of siderite,kaolinite,dolomite,calcite and quartz has been analyzed inN_2.The experimental results indicate:the mixed minerals of the dolomite/calcite(1:1)gen-erate thermal decomposition in CO_2, three endothermic effects of releasing CO_2 appear on theDTA curves,so the discrimination can be obtained by the characteristic peaks.
Keywords:differential thermal analysis  gas chromatography  evolved gas detection  siderite  dolomite:calcite
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