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近年来,以火焰作为光源的光谱分析的光电法,日益广泛地应用于碱金属、碱土金属和某些重金属元素的测定。其主要的优点有: 1.分析手续快速简单,测定溶液中的某一元素只需1～2分钟。 2.分析误差一般为±2～5％(相对百分数),元素含量少时,比重量法或容量法准确。在某些情形下误差还可以降低到±0.2％。 3.测定的溶液只要几毫升,可用于微量分析。
In recent years, the photoelectric method using the flame as a light source for spectroscopic analysis has been increasingly applied to the determination of alkali metals, alkaline earth metals and some heavy metal elements. Its main advantages are: 1. Quick and easy analysis procedures, the determination of an element in solution only 1 to 2 minutes. 2. Analysis of the error is generally ± 2 ~ 5% (relative percentage), the element content is less than the gravimetric method or volume method accurate. In some cases the error can also be reduced to ± 0.2%. 3. Determination of the solution as long as a few milliliters can be used for trace analysis.