【摘要】 本文研究了在微酸性介质中用抗坏协酸还原Fe（Ⅲ），Fe（Ⅱ）与1，10-二氮杂菲（phen）形成Fe（phen）32+配合物，加入ClO4-阴离子与之形成离子缔合物，再用有机溶剂硝基苯萃取，火焰原子吸收测定有机相。本法检出限为1．1ng／mL，回收率为98．5％－106％。更多还原

【Abstract】 A new method of determination trace forrum was descrthed. In weak acidic medium,the ion-paircomplex of Fe(Ⅱ)-(phen)3-(ClO42-)2was formed,and extracted with nitrobenzene,and detected byflame atomic absorytion spectrophotometry. The detection limit was 1. 1 ng. mL-1. The RSD was3. 57 for a sample containing 0. 70% Fe (n=6). The recovery was 98. 50% - 106 %. This method issensitive,vapid and accurate fot determination of trace ferrum in building materials.更多还原