The present study is an attempt to know the temporal and spatial distribution of geochemical components in the lignite deposit of Kapurdi, Barmer Basin (Rajasthan). Lignite samples have been subjected to proximate, ultimate and elemental analyses, and determination of mineral carbon (MINC%). Besides, various minerals and functional groups have been analyzed through X-ray diffraction (XRD) and Fourier transforms infrared spectroscopy (FTIR). Selected environmentally sensitive and potential hazardous elements like Cu, Cd, Zn, Ni, Cr, Pb, Mn, Al, Fe and Co are determined using atomic absorption spectrophotometer (AAS). To know the association of minerals with organic matter, scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) has also been carried out. The concentration of Co, Ni, Cd, Pb, Na, and K is high when compared with world average and is main concern for the environmental and health hazards. The elements like Fe, Ca, Mg, Zn, and Pb have shown increasing trend from top to bottom of the lignite seam with some fluctuations in the values in few bands whereas others do not follow a definite trend of variation along the seam profile.

中文翻译：

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印度西部拉贾斯坦邦Barmer盆地Kapurdi褐煤中的矿物和选定的环境敏感元素的研究：对环境的影响

本研究试图了解巴尔默盆地（拉贾斯坦邦）Kapurdi褐煤矿床中地球化学成分的时空分布。对褐煤样品进行了近，最终和元素分析，并测定了矿物质碳（MINC％）。此外，还通过X射线衍射（XRD）和傅里叶变换红外光谱（FTIR）分析了各种矿物和官能团。使用原子吸收分光光度计（AAS）确定选定的环境敏感和潜在危险元素，例如Cu，Cd，Zn，Ni，Cr，Pb，Mn，Al，Fe和Co。为了知道矿物与有机物的关系，还进行了扫描电子显微镜-能量色散光谱法（SEM-EDS）。Co，Ni，Cd，Pb，Na的浓度 与世界平均水平相比，钾含量高，是对环境和健康危害的主要关注。Fe，Ca，Mg，Zn和Pb等元素从褐煤煤层的顶部到底部显示出增加的趋势，少数几个带中的值存在波动，而其他元素沿煤层轮廓没有明显的变化趋势。