【摘要】 在０．２４～０．４２ｍｏｌ／ＬＨＣｌ介质中，研究了１７种络合剂对锆（Ⅳ）－ｍ－ＮＰＦ－ＣＴＭＡＢ显色反应的影响。除乳酸、甘露醇、α－羟基异丁酸、氧代戊二酸和柠檬酸外，其余络合剂都使体系的吸光度降低。有乳酸和甘露醇存在下，有色络合物的表观摩尔吸光系数为１．３０×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。Ｚｒ（Ⅳ）在０～１０μｇ／２５ｍＬ符合比尔定律。方法用于铝合金中微量锆的测定，结果满意。更多还原

【Abstract】 In 0 24～0 42mol/L HCl medium,effects of 17 complex reagents for colour reaction of Zr(Ⅳ)-m-NPF-CTMAB system were studied.In the presence of these complex reagents,absorptivity of colored complex is redcxuced.except for lactic acid,mannitol,α hydroxy-isobutyric acid,ketoglutaric acid and citric acicl.In the presence of lactic acid and mannitol,apparent molar absorptivity of colored complex is 1 30×10 5L·mol -1 ·cm -1 .Beer′s law is obeyed in the range 0～10 0μg/25mL for zirconium.The proposed method has been applied to the determination of trace zirconium in alloys with satisfactory results.更多还原