Analysis of samples
In order to highlight the utility of the proposed method,
it was used for the spectrophotometric determination of copper contents of natural water and pharmaceutical samples.
The results are given in Table 2 for pharmaceutical samples.
The copper concentration was determined by the present
method taking suitable aliquots of the above sample solution,
and the results are compared with the certified values.
The presented procedure was also applied for the determination of copper contents of two drinking water samples
from Turkey. As is seen from Table 3, good agreement was