1-(8-氨基喹啉-5-偶氮)-8-羟基3,6-萘二磺酸与铜的显色反应研究  

Study on the color reaction of 1-(8-aminoquinoline-5-azo)-8-hydroxy-3, 6-naphthalenedisulfonic acid with copper

作　　者：赵建为[1] 王英[1] 周康[1] 杨光宇[2] 徐其亨[2] 

机构地区：[1]昆明冶研新材料股份有限公司,云南昆明650031 [2]云南大学化学系,云南昆明650091

出　　处：《冶金分析》2002年第2期34-36,共3页Metallurgical Analysis

摘　　要：研究了新显色剂 1 (8 氨基喹啉 5 偶氮 ) 8 羟基 3 ,6 萘二磺酸 (简称AQAHNA)与铜 (Ⅱ )的显色反应条件。在Tween 80存在下 ,pH5 0的乙酸 乙酸钠缓冲溶液中 ,AQAHNA与铜形成 2∶1的红紫色络合物 ,其最大的吸收峰位于5 90nm ,表观摩尔吸光系数 (ε)为 8 7× 10 4 。铜浓度在 0～ 0 4mg/L范围内遵守比尔定律。该方法用于铝合金中铜的测定 ,结果满意。The conditions of color reaction of a new reagent 1 (8 aminoquinoline 5 azo) 8 hydroxy 3,6 naphthalenedisulfonic acid(AQAHNA)with copper are reported In HAc NaAc(pH5 0)buffer solution and in the presence of Tween 80,AQAHNA reacts with copper*' to form a 2∶1 red violet complex which exhibits a maximum absorbance at 590nm The apparent molar absorptivity of the complex is 8 7×10 4L·mol -1 ·cm -1 .Beer's law is obeyed over the concentration range of 0-0 4mg/L for copper The method has been used for the determination of micro copper in aluminium alloys with satisfactory results

关 键 词：显色反应 1-(8-氨基喹啉-5-偶氮)-8-羟基-3 6-萘二磺酸 分光光度法 铜 AQAHNA 

分 类 号：O657.32[理学—分析化学]