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
出处
《冶金分析》
CAS
CSCD
北大核心
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 )
