Speciation of inorganic selenium by solid phase extraction using nanozirconium oxide/boron oxide composite material

Authors : HAKAN ERDOĞAN, ÖZCAN YALÇINKAYA, ALİ REHBER TÜRKER

Pages : 772-783

View : 17 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The speciation and preconcentration of selenium were carried out by solid phase extraction using nanozirconium oxide/boron oxide insert ignore into journalissuearticles values(ZrO$_{2}$/B$_{2}$O$_{3});$. Electrothermal atomic absorption spectrometry insert ignore into journalissuearticles values(ETAAS); was used for detection. This preconcentration and/or speciation method depends on the retention of Seinsert ignore into journalissuearticles values(IV); ions selectively as its ammonium pyrrolidine dithiocarbamate insert ignore into journalissuearticles values(APDC); complex on the sorbent. The effects of pH, flow rate, and volume of sample solution and eluent type were investigated for determining the optimum preconcentration and speciation conditions. The effects of other ions that may interfere with the determination and speciation of selenium were also investigated. Moreover, the analytical performance criteria of the method such as detection limit, quantification limit, linear working range, precision, and accuracy were also determined under the optimum experimental parameters. The analytical limit of detection for Seinsert ignore into journalissuearticles values(IV); was 1.21 $\mu $g L$^{-1}$. The accuracy of the method was checked by applying it to certified reference material insert ignore into journalissuearticles values(NIST 1643e); and spiked water samples. It was shown that the determination could be performed with a relative error of about 10%. The precision of the method was also at an acceptable level for analytical purposes for trace analysis insert ignore into journalissuearticles values(relative standard deviation deviation
Keywords : Speciation, preconcentration, selenium, solid phase extraction, nanometal oxide, electrothermal atomic absorption spectrometry