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准确快速测定钼精矿中锡的含量,对当前强化钼精矿产品销售和竞争能力有重要意义。YB735-70部颁标准中钼精矿锡的测定采用极谱法,手续繁琐,操作时间长,不易掌握。文献[3]用茜素紫比色法,测定下限为0.005％,灵敏度不高。苯茐酮比色法和火焰原子吸收光谱法灵敏度都低。上述方法不适用于我公司产品中痕量锡的测定。近年来有人采用氢化物原子吸收光谱法、无色散原子荧光法和石墨炉原子光谱法测定微量
Accurate and rapid determination of tin content in molybdenum concentrate is of great significance to the current sales and competitiveness of molybdenum concentrate products. YB735-70 ministerial standards molybdenum concentrate Determination of tin by polarography, tedious procedures, the operation of a long time, not easy to grasp. [3] Alizarin purple colorimetric method, the determination of the lower limit of 0.005%, the sensitivity is not high. Benzophenone colorimetry and flame atomic absorption spectrometry are low sensitivity. The above method does not apply to the determination of trace tin in our products. In recent years, some people use the hydride generation atomic absorption spectrometry, non-dispersive atomic fluorescence spectrometry and graphite furnace atomic spectrometry for the determination of trace