血清铁(SI)和总铁结合力(TIBC)是临床上了解铁代谢的常用指标.SI降低和TIBC升高是诊断缺铁的重要根据.过去广泛采用的光电比色法和火焰原子吸收法的缺点是用血量大.因此,在儿科的应用受到限制.挽近Olsen等和Yeh等采用超微量血清样品及三氯醋酸(TCA)沉淀蛋白以排除溶血干扰的方法,但该法在用电热原子吸收法测定时,易出现样品飞溅现象,致使测定结果重现性差.我们在样品溶液中加 Serum iron (SI) and total iron binding capacity (TIBC) is a common indicator of clinical understanding of iron metabolism.SSI reduction and elevated TIBC is an important basis for diagnosis of iron deficiency.In the past widely used photoelectric colorimetry and flame atomic absorption spectrometry Of the disadvantage is the use of large blood.Therefore, the application of pediatrics is limited.New Olsen and Yeh and other ultra-trace serum samples and trichloroacetic acid (TCA) to precipitate protein to eliminate hemolysis interference method, but the law in use Electrothermal atomic absorption spectrometry, prone to sample spatter, resulting in poor reproducibility of the test results. We in the sample solution plus