Three-way spectrofluorimetric-assisted multivariate determination of nonylphenol ethoxylate and 2-naphtalene sulfonate in wastewater samples and optimization approach for their photocatalytic degradation by CoTiO3nanostructure.
This study presents a new strategy for the simultaneous quantification of two industrial contaminants. The excitation-emission fluorescence data matrix combined with a three-way chemometric method, such as parallel factor analysis, was used for the determination of nonylphenol ethoxylate (NPE-9) as a nonionic surfactant and 2-naphthalene sulfonate (2-NS) in waste water samples. It is noticeable that this method can resolve overlapping signal into spectral and relative concentration profiles. By spiking the known concentrations of these compounds in the wastewater samples, the accuracy of the proposed methods was validated and recoveries of the spiked values were calculated. High recoveries (i.e. 90-110%) obtained for the waste water samples indicate the present method can be used successfully to determine the analytes concentration in the environmental contaminations. The photocatalytic degradation of NPE-9 and 2-NS in aqueous solution was studied using the CoTiO3nanoparticles catalyst. It was synthesized by the sol-gel technique. The catalytic activity of the prepared nanoparticles was measured in a batch photoreactor containing appropriate solutions of these compounds with UV irradiation. The photodegradation process of these compounds was optimized by using the central composite design. The CoTiO3showed high activity for UV-photocatalytic degradation of NPE-9 and 2-NS.
a Department of Analytical Chemistry, Faculty of Chemistry , University of Kashan , Kashan , I.R. Iran.
Atefeh
http://orcid.org/0000-0001-5807-0640
A
Mohsenikia
a Department of Analytical Chemistry, Faculty of Chemistry , University of Kashan , Kashan , I.R. Iran.
Ali
A
Gholami
a Department of Analytical Chemistry, Faculty of Chemistry , University of Kashan , Kashan , I.R. Iran.
Saeed
http://orcid.org/0000-0002-7328-9138
S
Masoum
a Department of Analytical Chemistry, Faculty of Chemistry , University of Kashan , Kashan , I.R. Iran.
Saleheh
http://orcid.org/0000-0001-5933-6690
S
Abbasi
D005026:Ethylene Glycols / Q000032:analysis*; D010782:Photolysis; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000032:analysis*
D005026:Ethylene Glycols; D062065:Wastewater; D014874:Water Pollutants, Chemical; C021754:terics
2-naphthalene sulfonate (2-NS); Spectrofluorimetry; nanophotocatalyst; nonylphenol ethoxylate (NPE-9); wastewater samples