| In this paper, WPP2 two-meter planar grating spectrograph is used to directly load geological samples with lower carbon electrode for spectrography. The blackness of spectral lines of elements is observed by naked eye under the spectrograph, and the content of elements （components） is determined by combining the blackness comparison method and the salient line method. The semi-quantitative analysis of 37 elemental components including beryllium, barium, boron, lead, tin, titanium, manganese, gallium, chromium, nickel, vanadium, copper, zirconium, silver, gold, zinc, cobalt, strontium, molybdenum, phosphorus pentaoxide, scandium, yttrium, lanthanum, cerium, ytterbium, niobium, tantalum, uranium, thorium, arsenic, antimony, bismuth, cadmium, tungsten, indium and lithium in the sample was realized with high sensitivity. Application range :0.000X ~ 10.00%. The biggest advantage of this method is that it does not have the problem of leakage and misdetection, and it is far superior to modern large-scale instruments in determining mineral composition. This method is simple, rapid, accurate and reliable. |
