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我们试验出火焰发射法测玻璃中氧化钡之后,又发现另一种氧屏蔽空气-乙炔原子吸收法,效果更佳。氧屏蔽空气-乙炔焰作为新的高温火焰出现后,能测一些普通原子吸收法所不能测的元素,试验证明在相同仪器条件下,该火焰中氧化钡灵敏度提高到2.9μg/ml,比普通火焰提高12.6倍。如加大乙炔流量其灵敏度还可以提高。此时氧化钙干扰就相应地大幅减小,(1.5mgCaO/ml液吸光度为0.019)。 (一)仪器及其工作条件: 使用WFX-110型原子吸收分光光度计(附PZ58-1型数子电压表),燃烧器按王升章等资料制造,
After we tested the flame emission method to measure the barium oxide in the glass, we found another oxygen shielding air - acetylene atomic absorption method, the effect is better. Oxygen shielding air-acetylene flame as a new high-temperature flame appears, can measure some of the elements can not be measured by conventional atomic absorption method, the test shows that under the same instrument conditions, the flame barium oxide sensitivity increased to 2.9μg / ml than ordinary Flame increased by 12.6 times. Such as increasing the acetylene flow rate of its sensitivity can also be improved. At this point, the calcium oxide interference is substantially reduced accordingly (1.5 mgCaO / ml liquid absorbance 0.019). (A) of the instrument and its working conditions: The use of WFX-110 atomic absorption spectrophotometer (with PZ58-1-type sub-voltage meter), the burner by Wang Sheng Zhang and other materials,