【摘要】 Ｃｕ（Ⅱ）与ＤＢＨ－ＰＦ生成１∶３的紫色络合物，在ｐＨ５．４六次甲基四胺－ＨＣｌ缓冲介质中在表面活性剂ＣＰＢ－ＯＰ存在下，显色反应时间为１０ｍｉｎ，络合物一经反应完全至少可稳定１０ｈ吸光度不变，摩尔吸光系数为１．６５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，最大吸收波长于５３８ｎｍ处，比耳定律范围为０～９μｇ／２５ｍｌ，方法已被应用于铝合金标样和硫铁矿中铜含量的测定，获满意的结果。更多还原

【Abstract】 The Copper(Ⅱ) can react with 2,3,7-Trihydroxy-9-Dibromo-Hydroxy phenyl Fluorone(DBH-PF)to form 1∶3 purple miceue complex in the (CH 2) 6N 4-HCl buffer solution (pH5.4) containing CPB and OP,The color is stabble and can keep for at least 10h.The molor absorptivity is 1.65×10 5L -1 ·cm -1 at 538nm.Beers law is obeyed in the range From 0 to 9 mg/25mL.This method has been applied to the determination of copper in alloy aluminium and pyrites with satisfactory results.更多还原