A new method of determination of micro iron was established By preconcentration with micro filtermembranes the complex of Fe- a, a -bipyridine -SDBS and the membrane are dissolved in DMSO and the iron isdetermined by spectrophotometric determination of absorbance of the organic system its maximum absorption isobserved at 530um with the apparent molar absorptivity being 1 .
本文介绍了铁（Ⅱ）与邻联吡啶,十二烷基苯磺酸钠形成的三元络合物，通过微孔滤膜富集分离，用二甲基亚砜将膜及络合物溶解，在分光光度计上测定吸光度，从而建立了测定微量铁的新方法。