Hakan ERDOĞAN, Ali Rehber TÜRKER, Ozcan YALÇINKAY

6994

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

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

The speciation and preconcentration of selenium were carried out by solid phase extraction using nanozir-conium oxide/boron oxide (ZrO2/B2O3). Electrothermal atomic absorption spectrometry (ETAAS) was used for de-tection. This preconcentration and/or speciation method depends on the retention of Se(IV) ions selectively as itsammonium pyrrolidine dithiocarbamate (APDC) complex on the sorbent. The effects of pH, ow rate, and volumeof sample solution and eluent type were investigated for determining the optimum preconcentration and speciationconditions. The effects of other ions that may interfere with the determination and speciation of selenium were alsoinvestigated. Moreover, the analytical performance criteria of the method such as detection limit, quanti cation limit,linear working range, precision, and accuracy were also determined under the optimum experimental parameters. Theanalytical limit of detection for Se(IV) was 1.21 g L1. The accuracy of the method was checked by applying itto certi ed reference material (NIST 1643e) and spiked water samples. It was shown that the determination could beperformed with a relative error of about 10%. The precision of the method was also at an acceptable level for analyticalpurposes for trace analysis (relative standard deviation
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Turkish Journal of Chemistry-Cover
  • ISSN: 1300-0527
  • Yayın Aralığı: 6
  • Yayıncı: TÜBİTAK
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