用标准加入火焰原子吸收法测定造币液中微量铁,极高含量的镍的化学干扰的影响被消除,利用塞曼效应扣背景,镍等基体的背景影响亦被扣除。镍量在50g/L以下时,11mg/L以下铁的标准曲线具有良好的线性,且都经过坐标原点。方法检出限(3S)为0.14mg/L,最大加标量为6mg/L时,测定范围为0.28-5mg/L。样品分析的加标曲线的相关系数为0.99956～0.99994,相对标准偏差为0.94～2.23％,方法准确可靠。 The standard addition of flame atomic absorption spectrometry (FAAS) to the determination of trace amounts of iron in coin-making liquid, the effect of chemical interference of very high content of nickel was eliminated. The background effect of nickel and other substrates was also deducted by Zeeman effect background. When the amount of nickel is below 50g / L, the standard curve of iron below 11mg / L has a good linearity and passes through the origin of coordinates. The detection limit (3S) of the method was 0.14mg / L, the maximum scalar quantity was 6mg / L, the determination range was 0.28-5mg / L. The correlation coefficient of spiked curve of sample analysis was 0.99956 ~ 0.99994, the relative standard deviation was 0.94 ~ 2.23%. The method was accurate and reliable.