摘要:
本文用多变量分析法研究了煤中痕量元素的分布,并用实验研究了有机溶剂提取前后青山烟煤中痕量元素的变化.多变量分析结果表明:As,Cr.Co,Ni,Cu,Cd,V,Pb等元素与Be,Ge在煤中具有不同的分布特征.对青山烟煤的实验研究结果则表明:Cr,Co,Ni,Cu,Cd,Pb等元素趋向于与煤中的矿物质相结合,而Be,Ge两元素有较强的有机亲和性.实验研究结果与多变量分析结果相符.
Abstract:
Based on the determination of 10 trace elements in 7 kinds of coal, multivariable analysis were used in the study of distribution of trace elements in coal. The results of factor analysis showed that a 3-factor model interprets reasonably the correlations of these trace elements. The results of cluster analysis showed that 10 trace elements clustered reasonably into two groups. The results of multivariable analysis can be interpreted by the chemial properties of these elements. Trace elements As, Cr, Co, Ni, Cu, Cd, V and Pb have similar distribution characteristics, while Be and Ge have similar behavior.As an example, trace elements in Qingshan bituminous were determined after extraction with dimethylbenzene. The experimental results showed that trace elements Cr, Co, Ni, Cu, Cd and Pb have a tendency of association with mineral substances in coal while Be and Ge have tendency of association with organic substances. The experimental results were agreement with those of the multivariable analysis.
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