Basit öğe kaydını göster

dc.contributor.authorSen, Furkan Burak
dc.contributor.authorBENER, Mustafa
dc.contributor.authorBEKDEŞER, Burcu
dc.contributor.authorAPAK, Mustafa Reşat
dc.date.accessioned2021-02-28T14:22:56Z
dc.date.available2021-02-28T14:22:56Z
dc.identifier.citationSen F. B. , BENER M., BEKDEŞER B., APAK M. R. , "0Redox-based colorimetric sensing of H2O2 after removal of antioxidants with ABTS radical oxidation", SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, cilt.248, 2021
dc.identifier.issn1386-1425
dc.identifier.otherav_cfe07da2-ca59-4ef7-a574-9a78df1cb3d4
dc.identifier.othervv_1032021
dc.identifier.urihttp://hdl.handle.net/20.500.12627/1400
dc.identifier.urihttps://doi.org/10.1016/j.saa.2020.119266
dc.description.abstractMonitoring and determining H2O2 in many industries, treatment plants and biochemical media is important because of its harmful effects even at low concentrations. This work proposes a redox-based colorimetric sensor for the determination of hydrogen peroxide in the presence of antioxidants which are known interferents causing positive errors. On the other hand, the widely used peroxidase-based methods are interfered by enzyme inhibitors. The proposed method consists of two stages, namely antioxidant removal and H2O2 determination. In the first step, antioxidants were removed simply using ABTS radical (ABTS(center dot+)) oxidant produced by persulfate. After antioxidant elimination, H2O2 in samples was determined by using the CUPRAC colorimetric sensor. The CUPRAC reagent, copper (II)-neocuproine (Cu(II)-Nc), immobilized on a Nafion persulfonate membrane was used for sensor preparation. The light blue Cu (II)-Nc was reduced by H2O2 to the yellow-orange colored Cu(I)-Nc chelate on the sensor, and the absorbance increase at 450 nm was recorded. The LOD and the LOQ values obtained for H2O2 were 0.33 and 1.10 mM, respectively. The proposed assay was validated in terms of linearity, additivity, precision and recovery. The H2O2 contents of spiked food extracts, synthetic serum and certain commercial products (i.e. food sterilization solution, whitening toothpaste and hair bleaching solution) were found to be comparable to the results of peroxidase-ABTS and titanyl sulfate reference assays. In addition, peroxide-type explosive triacetone triperoxide (TATP) was successfully determined in the presence of amine-type antioxidants. The proposed simple and low-cost assay is not inhibited by environmental agents (heavy metals, pesticides, sulfhydryl agents, etc.) adversely affecting enzymatic methods. It is additionally insensitive to turbidity and colored components of complex samples. (C) 2020 Elsevier B.V. All rights reserved.
dc.language.isoeng
dc.subjectTemel Bilimler (SCI)
dc.subjectSPEKTROSKOPİ
dc.subjectKimya
dc.subjectSpectroscopy
dc.subjectTemel Bilimler
dc.subjectSpektroskopi
dc.subjectFizikokimya
dc.subjectPhysical Sciences
dc.subjectGeneral Chemistry
dc.subjectChemistry (miscellaneous)
dc.title0Redox-based colorimetric sensing of H2O2 after removal of antioxidants with ABTS radical oxidation
dc.typeMakale
dc.relation.journalSPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
dc.contributor.departmentİstanbul Üniversitesi-Cerrahpaşa, Mühendislik Fakültesi, Kimya Bölümü
dc.identifier.volume248
dc.contributor.firstauthorID2519224


Bu öğenin dosyaları:

DosyalarBoyutBiçimGöster

Bu öğe ile ilişkili dosya yok.

Bu öğe aşağıdaki koleksiyon(lar)da görünmektedir.

Basit öğe kaydını göster