Change search
ReferencesLink to record
Permanent link

Direct link
Exploring the limitations of the Hantzsch method used for quantification of hydroxyl radicals in systems of relevance for interfacial radiation chemistry
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry. Wuhan University of Technology, China.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.ORCID iD: 0000-0003-0663-0751
2017 (English)In: Radiation Physics and Chemistry, ISSN 0969-806X, E-ISSN 1879-0895, Vol. 130, 1-4 p.Article in journal (Refereed) Published
Abstract [en]

In the presence of Tris or methanol, hydroxyl radicals in systems of relevance for interfacial radiation chemistry can be quantified indirectly via the Hantzsch method by determining the amount of the scavenging product formaldehyde formed. In this work, the influence of the presence of H2O2 on the Hantzsch method using acetoacetanilide (AAA) as derivatization reagent is studied. The experiments show that the measured CH2O concentration deviates from the actual concentration in the presence of H2O2 and the deviation increases with increasing [H2O2]0/[CH2O]0. The deviation is negative, i.e., the measured formaldehyde concentration is lower than the actual concentration. This leads to an underestimation of the hydroxyl radical production in systems containing significant amount of H2O2. The main reason for the deviation is found to be three coupled equilibria involving H2O2, CH2O and the derivative produced in the Hantzsch method.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 130, 1-4 p.
Keyword [en]
Acetoacetanilide, Formaldehyde, Hantzsch method, Hydrogen peroxide, Hydroxyl radical, Derivatization reagent, Formaldehyde concentrations, Hantzsch, Hydroxyl radicals, Radiation chemistry, acetanilide derivative, unclassified drug, Article, chemical analysis, chemical reaction kinetics, concentration (parameters), controlled study, interfacial radiation chemistry, quantitative analysis, radiochemistry
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-195129DOI: 10.1016/j.radphyschem.2016.07.021ISI: 000388777200001ScopusID: 2-s2.0-84979622715OAI: oai:DiVA.org:kth-195129DiVA: diva2:1048243
Note

QC 20161121

Available from: 2016-11-21 Created: 2016-11-02 Last updated: 2017-01-04Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Yang, MiaoSoroka, InnaJonsson, Mats
By organisation
Applied Physical Chemistry
In the same journal
Radiation Physics and Chemistry
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 24 hits
ReferencesLink to record
Permanent link

Direct link