目前,根据微量元素含量的变化来研究岩体的地球化学特征应用日广。这给分析工作提出了新课题,要求制订出灵敏度高并能同时测定多元素的快速光谱定量方法。近年来,文献里已刊载过一些文章。本文在前人工作的基础上结合本单位的不同要求及具体条件,采用直流电弧作激发源,垂直电极摄谱,选择Al_2O_8+CaCO_3+MgO+Na_2CO_3的混合物为缓冲剂,以Bi及Pd为内标元素,在二米光栅摄谱仪上一次摄谱测定18个微量元素。大部 At present, according to the change of trace element content, the geochemical characteristics of rock mass are studied widely. This raises new topics for analytical work and calls for the development of rapid spectroscopic methods for the simultaneous determination of multiple elements with high sensitivity. In recent years, some articles have been published in the literature. Based on the previous work, combined with the different requirements of the unit and the specific conditions, direct current arc was used as the excitation source and vertical electrode for spectroscopy. The mixture of Al_2O_8 + CaCO_3 + MgO + Na_2CO_3 was selected as the buffer and Bi and Pd The standard element, measured on a two-meter grating spectrograph, 18 trace elements. Mostly