【摘要】 本文利用经典的红外光谱定量分析原理,选用798cm^-1,775cm^-1和875cm^-1分别作为石英、长石和方解石的分析吸收带,测定了东海陆架表层沉积物中这三种矿物的百分含量,结果表明,这三种矿物在该陆架的含量变化范围为石英10—70％,长石25—65％,方解石5—40％。从内陆架到外陆架,南部区域到北部区域其含量分布各有差异,主要与物质来源和沉积时代有关。更多还原

【Abstract】 Quartz, feldspar and calcite from sea can be quantitatively determined on the classical principle of infrared spectroscopic quantitative analysis. Analytical absorbing bands, 798 cm-1, 775cm-1 and 875cm-1, were used respectively for the three minerals.The method has the advantages of simplicity, accuracy and material-saving.The sources and distributions of quartz, feldspar and calcite in sediments from the East China Sea are briefly discussed in the paper.更多还原