Abstract
Aluminum can be determined by reaction with ethyl pyridoxyliminopyruvate in methanol. The neutral methanolic solution of pyridoxamine and a methanolic solution of ethyl pyruvate are mixed and heated at 70°for 15 min. This Schiff base solution is added to the methanolic solution of a sample containing aluminum nitrate. The time-absorbance curves have to be recorded for each sample, because the coloration of species absorbing at 488 nm is unstable. Calibration curve is obtained by plotting the maximum values in the time-absorbance curve against aluminum concentration. This spectrophotometric method can be used in the concentration range of 0.89 to 2.11 μg/ml of aluminum.
