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.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2004年第4期559-560,共2页
Chemical Research and Application
关键词
铝
分光光度法
DBC-偶氮氯膦
碳酸钠
aluminum
spectrophotometry
DBC—chlorophosphonazo
sodium carbonate
