Author/Authors :
Karimi، Mohammad Ali نويسنده , , Mazloum-Ardakani ، Mohammad نويسنده Department of Chemistry, Faculty of Science, Yazd University, Yazd, I.R. Iran , , Behjatmanesh-Ardakani، Reza نويسنده Department of Chemistry, Faculty of Science, Payame Noor University (PNU), Ardakan, I.R. Iran , , Mashhadizadeh، Mohammad Hossein نويسنده Department of Chemistry, Tarbiat Moallem University of Tehran, Tehran, I.R. Iran , , Zarea Zadeh، Nafiseh نويسنده Department of Chemistry, Faculty of Sciences, Payame Noor University (PNU), Ardakan, Iran ,
Abstract :
The H-point standard addition method (HPSAM), partial least squares (PLS)
and principal component regression (PCR) were used, during the present study, for the
simple, accurate and simultaneous determination of two oxidants of hydrogen peroxide
(H2O2) and peracetic acid (PAA) using the kinetic data from novel potentiometric
method. The methods are based on the difference observed in reaction rate of iodide ion
with PAA and H2O2 in the presence of Mo(VI) in acidic media. Therefore, the reaction
rate of iodide ion with PAA and H2O2 was monitored by an iodide ion-selective
electrode (IISE). Results have demonstrated that the simultaneous determination of
H2O2 and PAA can be done in the concentration ranges of 0.5-14.0 and 0.05-2.0 ?g
mL-1, respectively. The total relative standard error for applying the PLS and PCR
methods to 8 synthetic samples in the concentration ranges of 2.0-11.0 ?g mL-1 for H2O2
and 0.3-1.9 ?g mL-1 for PAA, were 2.70 and 3.24, respectively. The effects of certain
foreign ions, upon the reaction rate, were determined for assessing the selectivity of the method. The proposed methods (HPSAM, PLS and PCR) were evaluated, using a set of
synthetic sample mixtures, and applied for the simultaneous determination of H2O2 and
PAA in water samples.
