Tangential area-proportional baseline interpolation for complex-process DSC data - Yes or no?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911960" target="_blank" >RIV/00216275:25310/17:39911960 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.tca.2017.10.011" target="_blank" >http://dx.doi.org/10.1016/j.tca.2017.10.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tca.2017.10.011" target="_blank" >10.1016/j.tca.2017.10.011</a>

Result language

angličtina

Original language name

Tangential area-proportional baseline interpolation for complex-process DSC data - Yes or no?

Original language description

Theoretical simulations were used to evaluate distortions arising from the usage of tangential area-proportional interpolation in certain situations corresponding the specific thermokinetic background courses. In particular, the effects of different types of complex kinetic peaks (consisting of overlapping sub-processes) and different heat capacity changes associated with the given sub-processes were investigated. Performance of the tangential area-proportional baseline was evaluated in terms of the magnitude of errors arising from the consequent kinetic analysis done on the basis of isoconversional methods and multivariate kinetic analysis. Apparent activation energy and pre-exponential factor were found to be only very weakly influenced by usage of tangential area proportional interpolation in most of the commonly encountered inappropriate situations. On the other hand, the model-based parameters (kinetic model exponents or even preference of certain model) can be significantly affected by usage of tangential area-proportional interpolation without the exact knowledge of the true course of thermokinetic background. These errors increase with decreasing relative magnitude of the given sub-peak. Largest errors (up to 20%) were then associated with determination of the integral area of the kinetic peak (quantity related to the specific enthalpy of the process).

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10406 - Analytical chemistry

Project

<a href="/en/project/GA17-11753S" target="_blank" >GA17-11753S: Kinetic analysis of complex physico-chemical processes</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Thermochimica Acta

ISSN

0040-6031

e-ISSN

—

Volume of the periodical

658

Issue of the periodical within the volume

December

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

55-62

UT code for WoS article

000417665700008

EID of the result in the Scopus database

2-s2.0-85032497556