Application of the Polarographic Adsorptive Complex Waves of Aluminium(Ⅲ)-Chromazol KS
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摘要: 研究了鋁(Ⅲ)-鉻偶氮酚KS配合物及配位體在乙酸-乙酸銨緩沖溶液(pH6.1)的電化學行為,并探討了有關機理。提出了痕量鋁的測定方法,其線性范圍為4～200ng/ml,檢出限為1ng/ml。它可用于合金鋼中鋁的直接測定。Abstract: The electrochemical behaviours of the Al (Ⅲ)-Chromazol KS complex and the ligand have been investigated in HAc-NH Ac buffer solution (pH 6.1). The mechanism of related reactions is discussed. A new simple and sensitive single-sweep polarographic method is established for the determination of trace aluminium. The peak height of adsorptive complex wave is directly proportional to the concentration of Al(Ⅲ) in the range from 0.004 to 0.200 μg/ml, and the detection limit is 1.0ng/ml. The results of direct determination of trace aluminium in alloy steels are very satisfactory.
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Key words:
- Chromazol KS /
- aluminium /
- electochemical behaviours
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