分光光度法测定碳酸钠及水样中的痕量铝  

Spectrophotmetric determination of trace amount of aluminum in soldium carbonate and water samples

作　　者：胡伟华[1] 翟庆洲[1] 王巍[1] 江天肃[1] 

机构地区：[1]长春理工大学西校区纳米技术研究中心

出　　处：《化学研究与应用》2004年第4期559-560,共2页Chemical Research and Application

摘　　要：In an acetic acid-sodium acetate buffer solution of pH4.7,aluminium（Ⅲ）reacts with DBC-chlorophosphonazo to form a violet blue complex.The composition of the complex is 1∶1.The maximum absorption of the complex exhibits at 620 nm and the molar absorptivity is 1.38×104 L·mol-1·cm-1.Beer’s law is obeyed over the range of 0—35 μg of aluminium per 25 mL solution.The method was used in the determination of trace amout of aluminium in sodium carbonate and water samples with satisfactory results.In an acetic acid-sodium acetate buffer solution of pH4.7,aluminium(Ⅲ)reacts with DBC-chlorophosphonazo to form a violet blue complex.The composition of the complex is 1∶1.The maximum absorption of the complex exhibits at 620 nm and the molar absorptivity is 1.38×10~4 L·mol^(-1)·cm^(-1).Beer's law is obeyed over the range of 0—35 μg of aluminium per 25 mL solution.The method was used in the determination of trace amout of aluminium in sodium carbonate and water samples with satisfactory results.

关 键 词：铝 分光光度法 DBC-偶氮氯膦 碳酸钠 

分 类 号：O657.32[理学—分析化学]