Mojtaba Mohammadpoor, Roya Mohammadzadeh Kakhki* and Hakimeh Assadi Pages 1 - 10 ( 10 )
Background:Simultaneous determination of medication components in pharmaceutical samples using ordinary methods have some difficulties and therefore these determinations usually were made by expensive methods and instruments. Chemometric methods are an effective way to analyze several components simultaneously. Objective: In this paper a novel approach based on Bayesian regularized artificial neural network is developed for determination of Loratadine, Naproxen and Diclofenac in water using UV-Vis spectroscopy. Method: A dataset is collected by performing several chemical experiments and recording the UV-Vis spectra and actual constituent values. The effect of different number of neuron in hidden layer was analyzed based on final mean square error, and the optimum number was selected. Principle Component Analysis (PCA) was also applied on the data. Other back-propagation methods, such as Levenberg-Marquardt, scaled conjugate gradient and resilient backpropagation are tested. Results: In order to see the proposed network performance, it was performed on two cross-validation methods, namely partitioning data into train and test parts, and leave-one-out technique. Mean square errors between expected results and predicted ones implied that the proposed method has a strong ability in predicting the expected values Conclusion: The results showed that bayesian regularization algorithm has the best performance among other methods for simultaneous determination of Loratadine, Naproxen and Diclofenac in water samples .
Bayesian regularized artificial neural networks, Loratadine, Naproxen, Diclofenac, UV-Vis spectroscopy, Principle Component Analysis
Electrical and Computer Eng. Department, university of Gonabad, Gonabad, Department of Chemistry, Faculty of Sciences, University of Gonabad, Gonabad, Zahravi pharmaceutical company, Tabriz