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本文考查了一些试剂对石墨炉原子吸收测定痕量钼的增敏作用，确定了用氟化钙作为石墨炉原子吸收光谱法测定钼的基体改进剂，并选择了该体系测定钢中钼的最佳实验条件。实验证明，采用ＣａＦ２作基体改进剂，使钼在３１３．３ｎｍ处的原子吸光度提高了５．７倍，特征景由原来４２×１０－１１ｇ／１％提高到５１×１０－１２ｇ／１％。线性范围为０～１０００ｎｇ／ｍｌ钼，检测下限为０．５５ｎｇ／ｇ。对钼含量为０．０××～×．××％的钢标样测定结果满意。
In this paper, we investigated the sensitizing effect of some reagents on the determination of trace molybdenum by graphite furnace atomic absorption spectrometry, determined that calcium fluoride was used as the matrix modifier of graphite furnace atomic absorption spectrometry and chose this system to determine the molybdenum content in steel Good experimental conditions. Experiments show that the use of CaF2 as a matrix modifier makes the atomic absorption of molybdenum 313.3nm at 5.7 times the characteristic view from the original 42 × 10-11g / 1% to 51 × 10-12g / 1%. Linear range of 0 ~ 1000ng / ml molybdenum, detection limit of 0.55ng / g. The molybdenum content of 0.0 × × ~ ×. ××% steel standard sample results are satisfactory.