Abstract :
This study deals with developing a method to determine the impact of lead via the light spectrum in the solid
phase. This method is characterized by selectivity, speed and ease in performing the analysis. It also allows secure
detection of low (LOD) and high accuracy analysis (LOQ).
This method is based on the concentration and identification of the elements as a single transaction. The
adsorption of lead was studied by the cationic exchanger KY-2-8 form - H + at a pH = 1 in static conditions. The
maximum adsorption happened within 30 minutes after the solution was moved.
The cationic exchanger was isolated at the end of the adsorption, and was treated with a solution of sodium
sulfur (Na2S). The severity of the resulting coloration reversal was identified on the Spectrophotometer ФОУ device
at a wavelength of 540 nm compared to the cationic exchanger processor in a similar way, but was lead-free. The
proposed method allowed the identification 0.05 μg/ml lead with a higher sensitivity compared to other reference
methods.
Keyword :
Optical spectroscopy on the solid phase, an organic reagent PAR (4- (2-pyridylazo) -resorcinol), lead, cationic exchanger for strong acid KY-2-8.