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用氯化钠—碳酸锂混合饱和溶液取代固体粉末内标缓冲剂,滴加于装样电极端上;交流电弧18安培,曝光45秒;以光谱背景为内标测量银、钼谱线。分析质量优于一般光谱定量方法。操作手续省去称量与研磨等步骤。具有简捷快速易掌握而又准确等优点,适合于大批量地质和化探样品测定。实验及结果(一)钠锂盐的影响无载体或缓冲剂的试样,在电弧燃烧的中后期钼元素蒸发开始,呈马鞍形状蒸发曲线。在NaCl+LiCO_3的作用下,
The internal standard buffer of solid powder was replaced by a mixed solution of sodium chloride and lithium carbonate and dropped onto the loading electrode end. The AC arc was irradiated at 18 A for 45 seconds. The silver and molybdenum spectra were measured with the spectral background as internal standard. The analytical quality is superior to the general spectral quantification method. Operating procedures save weighing and grinding steps. Has the advantages of simple and easy to grasp quickly and accurately, etc., suitable for large quantities of geochemical and geochemical samples measured. Experiments and Results (I) Effect of Sodium Lithium Salt Samples without carrier or buffer began to evaporate molybdenum in the middle and later stages of arc burning, showing a saddle shape evaporation curve. Under the action of NaCl + LiCO 3,