火焰原子吸收分光光度法测定铜合金中的铁

研究了火焰原子吸收分光光度法测定铜合金中铁含量的方法，对仪器工作条件如灯电流、光谱通带、空气和乙炔流量进行了分析。铁的质量浓度在0-5mg／L内与吸光度呈良好的线性关系，线性方程为A：0．03179c＋0．004098，相关系数，r=0．9996，检出限为0．009mg／L。用该方法对4种铜合金标准物质进行测定，测定结果与标准值相符，相对标准偏差分别为0．54％，0．78％，0．10％，2．07％0=6）。

Determination of Iron in Copper Alloy by Flame Atomic Absorption Spectrometry

The determination of iron in copper alloy was investigated by flame atomic absorption spectrometry, and measuring conditions such as lamp current, light spectrtkm pass band, air-C2H2 flow rate were analyzed. The concentration of iron was linear with the absorbance in the range of 0--5 mg / L, the regression equation was A=0.03179c＋0.004 098, the correlative coefficient r=0.999 6, the detection limit was 0.009 mg / L. The method was used for determining four kinds of copper alloy standard materials, the detection results were consistent with the standard values, and the relative standard deviation were 0.54%, 0.78%, 0.10%, 2.07%, respectively.