提出用光电直读光谱测定地质化探试样中钇、锰、钛、钒、钴、镍、锶、铬、钡和锡。采用Ar-O_2可控气氛直流电弧激发以降低光谱背景提高检测能力,研制了一套可恒压稳流的Ar-O_2供给系统。用碘化铵、硫酸钠、人工基物和石墨粉配制缓冲剂,将试样与缓冲剂的混合物压入细颈杯型电极进行激发,结果满足化探分析的要求。 It is proposed to measure yttrium, manganese, titanium, vanadium, cobalt, nickel, strontium, chromium, barium and tin in geochemical exploration samples by photoelectric direct reading spectroscopy. Ar-O_2 controllable atmosphere DC arc excitation was used to reduce the spectral background and improve the detection ability. A set of Ar-O_2 feeding system with constant voltage and steady flow was developed. The buffer was prepared with ammonium iodide, sodium sulfate, artificial matrix and graphite powder. The mixture of the sample and the buffer was pressed into the jacketed cup electrode and the results were met.