A reliable algorithm for calculating stoichiometry parameters in the hard modeling of spectrophotometric titration data
A reliable algorithm for calculating stoichiometry parameters in the hard modeling of spectrophotometric titration data
复制标题
分光光度滴定数据硬建模中计算化学计量参数的可靠算法
DOI:
10.1002/cem.3409
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发表时间:
2022
影响因子:
2.4
通讯作者:
Vander Griend, Douglas A.
中科院分区:
文献类型:
--
作者:
Kazmierczak, Nathanael P.;Chew, Joyce A.;Vander Griend, Douglas A.
Computation of binding constants from spectrophotometric titration data is a very popular application of chemometric hard modeling. However, the calculated values are misleading if the correct binding model is not used. Given that many supramolecular systems of interest feature unknown speciation, a priori determination of binding stoichiometry constitutes an important unsolved problem in chemometrics. We present a new and reliable algorithm for accomplishing this task, implemented using a hybrid particle swarm optimization technique. Simultaneous optimization of stoichiometry ratios and binding constants allows the optimal binding model to be calculated in just a few minutes for systems with up to four reactions. Simulated data studies demonstrate that the algorithm finds the correct stoichiometry with up to nine reactions in the absence of noise, including accurately determining species with unusual stoichiometry, such as H2G5. Application to four experimental datasets shows the algorithm is robust to experimental errors for a variety of chemical systems and binding models. This algorithm will facilitate the discovery of complex binding models, increase efficiency in titration analysis, and avert incorrect stoichiometry models, thereby improving the reliability of binding constant information in spectrophotometric titrations.
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DOI:
--
发表时间:
2012
期刊:
Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy
影响因子:
--
作者:
M. Meloun;Z. Ferenčíková;M. Javůrek
通讯作者:
M. Javůrek
DOI:
--
发表时间:
1986
期刊:
Talanta: The International Journal of Pure and Applied Analytical Chemistry
影响因子:
--
作者:
J. Havel;M. Meloun
通讯作者:
M. Meloun
DOI:
--
发表时间:
1985
期刊:
Talanta: The International Journal of Pure and Applied Analytical Chemistry
影响因子:
--
作者:
H. Gampp;Marcel Maeder;Charles J. Meyer;A. Zuberbühler
通讯作者:
A. Zuberbühler
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
M. Briellmann;A. Zuberbühler
通讯作者:
A. Zuberbühler
影响因子:
2.7
作者:
T. W. Wall;D. Greening;G. Woolsey
通讯作者:
G. Woolsey