煤矿岩尘中27种元素含量与掘进工人矽肺患病率的研究

CORRELATION BETWEEN PREVALENCE OF SILICOSIS AND 27 ELEMENTARY CONTENTS OF ROCK-DUST AMONG TUNNELLIERS IN COAL MINES

用Ｘ－射线荧光法和原子吸收法对煤矿岩尘样品做了硅、铝、铁、钙、镁、钾、钠、钛、磷、锌、铜、钻、镍、铅、镉、铬、锰、钒、钡、锶、锆、铷、、钍、镓、铌和钇等２７种元素的含量测定。在岩尘元素含量与矽肺患病率的相关分析中观察到：与钡、锆、钾、钠呈显著性正相关；与铌呈显著性负相关。将岩尘元素含量以不同方法处理后再与患病率做多元逐步回归分析，求得方程基本相同。即与钡、镉、钠的含量呈显著性正相关；与镓、铝呈显著性负相关。用各种方法均得出岩尘中钡元素含量与患病率呈高度显著性正相关，说明钡在矽肺形成过程中可能起重要作用。

he contents of Si.Al,Fe,Ca,Mg,K,Na、Ti.P.Zn,Cu,Co,Ni.Pb,Cd.Cr.Mn,V,Ba,Zr.Rb,La、Th.Ga. Nb and Y were mesaured by way of X-ray Fluorescence and Atomic Absorption for rock dust samples from coal mines. The study of correlation between the prevalence rate of silicosis and elementary contents of rock dust shows that there is significant postitive correlation with elemtnts of Ba,Zr,K and Na,and significant neg- ativc correlation with Nb.The mnlti-stepwise regression equations were the same between prevalence and elementary contents.although different methods were employed to treat the data before analysis,There is sig- niflcant positive correlation between prevalence rate and Contents of Ba,Cd and Na.and significant negative correlation of Ga and Al.No matter what kind of statitics methods are used ,there is constant significant posi- tive correlation、between the prevalence rate and content of Ba,therefore,the elemant of Ba is important in the development of silicosis forming process probably.