新显色剂2-四氮唑偶氮-5-二乙氨基酚与钒显色反应的研究  

Study on colour reaction of the new reagent 2-tetrazolylazo-5-diethylamino phenol with vanadium*%

作　　者：潘富友[1] 梁华定[1] 葛昌华[1] 

机构地区：[1]台州师范专科学校化学系,浙江台州317000

出　　处：《冶金分析》2001年第3期5-6,4,共3页Metallurgical Analysis

基　　金：浙江省教委计划课题 (19990 3 65 )

摘　　要：研究了新显色剂 2 四氮唑偶氨 5 二乙氨基酚 (简称TZADAP)与V 的显色反应的条件。结果表明 ,在 pH 5 0的HAc NaAc缓冲溶液中 ,TZADAP与V 形成稳定的红色络合物 ,λmax=5 3 0nm ,试剂的λmax为 43 0nm ,Δλ为 10 0nm ,络合比为1:2 ,其表观摩尔吸光系数为 3 2 1× 10 4。V 在 0～ 0 8mg/L范围内服从比尔定律。在掩蔽剂作用下 ,可不经分离直接测定铝合金样品及合成废水中的钒 ,结果满意。In this paper,the conditions of colour reaction of the new reagent 2 tetrazolylazo 5 diethylamino phenol with V*% were reported Results have been shown that the reagent reacts with V*% to form a stable red complex (1∶2) in HAc NaAc medium at pH 5 0 The maximum absorption wavelength and apparent molar absorptivity are 530nm and 3 21×10 4L·mol -1 ·cm -1 respectively Beer’s law is obeyed in the range of 0-0 8mg/L for V*% The method has been applied to the direct determination of vanadium in aluminium alloys and synthesis water sample with satisfactory results

关 键 词：钒 分光光度法 TZADAP 显色剂 显色反应 

分 类 号：O657.3[理学—分析化学]