A combination of dynamic measurement protocol and advanced data treatment to resolve the mixtures of chemically similar analytes with potentiometric multisensor system
Kirsanov, Dmitry (St. Petersburg State University. Chemistry Department)
Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química)
Khaydukova, Maria (St. Petersburg State University. Chemistry Department)
Blinova, Yulia (St. Petersburg State University. Chemistry Department)
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
Babain, Vasily (Khlopin Radium Institute)
Legin, Andrey (St. Petersburg State University. Chemistry Department)

Data:	2014
Resum:	Data processing techniques and measuring protocol are very important parts of the multisensor systems methodology. Complex analytical tasks like resolving the mixtures of two components with very similar chemical properties require special attention. We report on the application of non-linear (artificial neural networks, ANNs) and linear (projections on latent structures, PLS) regression techniques to the data obtained from the flow cell with potentiometric multisensor detection of neighouring lanthanides in the Periodic System of the elements (samarium, europium and gadolinium). Quantification of individual components in mixtures is possible with reasonable precision if dynamic components of the response are incorporated thanks to the use of an automated sequential injection analysis system. The average absolute error in prediction of lanthanides with PLS was around 1×10-4 mol/L, while the use of ANNs allows the lowering of prediction errors down to 2×10-5 mol/L in certain cases. The suggested protocol seemsto be useful for other analytical applications where simultaneous determination of chemically similar analytes in mixtures is required.
Ajuts:	Ministerio de Ciencia e Innovación CTQ2010-17099
Nota:	Altres ajuts: ICREA Academia
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Chemometrics ; Lanthanides ; Mixture analysis ; Multisensor systems
Publicat a:	Talanta, Vol. 119 (February 2014) , p. 226-231, ISSN 1873-3573

DOI: 10.1016/j.talanta.2013.11.003

Postprint 18 p, 880.2 KB

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