Spectrophotometric Determination of Hexavalent Chromium after Complex Formation with EDTA Using H-Point Method

Abstract

We have applied H-point spectrophotometric method to the analysis of water
and industrial discharge samples for determination of microcontent of Cr⁶⁺ after
its complex formation with EDTA, having the aim of increasing the sensitivity,
accuracy, reproducibility and minimization of the method's bias. The concentration
values of Cr⁶⁺ are reported for Durres region, near a chemical factory.
The possibility for selective determination of Cr⁶⁺ in water and industrial
discharges sample, simplicity and rapidity of this method make it suitable for
screening large number of samples for environmental monitoring.