【摘要】 运用电离耦合等离子体质谱(ICP-M S)、冷原子吸收光谱(CV-AAS)、离子选择性电极法(ISE)和仪器中子活化分析(INAA),对云南、贵州、四川和重庆127件煤层刻槽样品和石煤样品中主要有害微量元素(包括Be,F,C l,C r,Th,U,A s,Se,Cd,Hg,T l和Pb)的含量进行了测定.结果表明,中国西南地区煤中明显富集的有害微量元素有云南的A s、四川的Cd、三省一市的C r和Se、四川和重庆的Hg.西南地区三省一市早二叠世煤中富集的有害微量元素有F,Th,U和Se,晚二叠世煤中富集的元素有Th,Se和Hg,晚三叠世煤中富集C l,Th和Hg,第三纪褐煤中富集A s.更多还原

【Abstract】 The content of toxic trace elements,including Be,F,Cl,Cr,Th,U,As,Se,Cd,Hg,Tl,and Pb,in 127 coal and stone coal channel samples from Yunnan,Guizhou,Sichuan,and Chongqing,was determined using inductively coupled plasma mass spectrometry(ICP-MS),cold-vapor atomic absorption spectrometry(CVAAS),ion-selective electrode(ISE),and instrumental neutron activation analysis(INAA).The results show that the coals from Yunnan of Southwest China were enriched in As;coals from Sichuan enriched in Cd;coals from Yunnan,Sichuan,Guizhou,and Chongqing enriched in Cr and Se;coals from Sichuan and Chongqing enriched in Hg.The early Permian coals from Southwest China were enriched in F,Th,U,and Se;the Late Permian coals enriched in Th,Se,and Hg;the Late Triassic coals enriched in Cl,Th,and Hg;the coals from Tertiary coals enriched in As.更多还原