光度法测定发样中铝的研究  

Study on Spectrophotometric Determination of Aluminium in hair

作　　者：马莎[1] 殷国建[1] 王亮[1] 尹家元[1] 

机构地区：[1]云南大学化学系,云南昆明650091

出　　处：《化工技术与开发》2000年第S1期169-170,共2页Technology & Development of Chemical Industry

摘　　要：本文研究了新显色剂 2 - (H酸偶氮 ) - 4,5-二硝基苯酚 (HADNP)与铝的显色反应 ,在 pH =5.3的六次甲基四胺 -盐酸缓冲介质中 ,HADNP与Al(Ⅲ )生成 3∶1的紫色络合物 ,λmax=570nm ,ε=3.2 92× 1 0 4 L/mol·cm ,Al含量在 0～ 1 2 μg/2 5mL内符合比尔定律 ,用于发样测定 ,结果满意。Colour reaction of 2-(H-acidazo)-4,5-dinitrophenol(HADNP) with aluminium was studied in pH=5.3 N 4(CH 2) 6-HCl buffer solution,HADNP can react with Al(Ⅲ)to form an 3∶1 stable complex.The molar absorptivity is 3.292×10 4 L/mol·cm at 570 nm.Beer'slaw is obeyed in the range of 0～12 μg/25mL.This method can be applied to the determination of Aluminium in hair with satisfactory results.

关 键 词：2-(H酸偶氮)-4 5-二硝基苯酚 光度法 发样 铝 

分 类 号：O657.3[理学—分析化学]