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用光谱法分析石灰岩中的微量元素过去发表的资料不多,有些仅分析其中的SiO_2、Al_2O_3、Fe_2O_3、MgO等组分,至于微量元素亦仅分析Cu、Pb、Zn等几个元素,而现在地质化探上要求分析Sr、Ba、Ag、Bi、Cd等许多微量元素。由于这些元素的蒸发行为相差较大,而且彼此间的波长相差较远,因此需采用不同条件的几次摄谱才能解决。若用原子吸收等方法,一方面需单个元素分别测量,另一方面由于大量Ca~(2+)的存在,使背景增加,需要扣除背景才能分析,费时费事。因此根据地质科研工作的需要,我们试验了用光
The trace elements in limestone were analyzed by spectroscopy. In the past, there was not much published data. Some only analyzed the components such as SiO_2, Al_2O_3, Fe_2O_3 and MgO. As for the trace elements, only some elements such as Cu, Pb and Zn were analyzed. Now, Geological exploration requires the analysis of Sr, Ba, Ag, Bi, Cd and many other trace elements. Due to the large difference between the evaporation behaviors of these elements and the long wavelength difference between them, it is necessary to adopt several spectrums under different conditions to solve them. If using atomic absorption and other methods, on the one hand to measure a single element, on the other hand due to the presence of a large number of Ca ~ (2+) to increase the background, need to deduct the background to analyze, time-consuming and laborious. Therefore, according to the needs of geological research work, we tested the use of light