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Spectrophotometry

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Spectrophotometric determination of synthetic colorants using PSO-GA-ANN.

Food chemistry
Four common food colorants, containing tartrazine, sunset yellow, ponceau 4R and methyl orange, are simultaneously quantified without prior chemical separation. In this study, an effective artificial neural network (ANN) method is designed for modeli...

Analysis of Closely Related Antioxidant Nutraceuticals Using the Green Analytical Methodology of ANN and Smart Spectrophotometric Methods.

Journal of AOAC International
Two new, simple, and specific green analytical methods are proposed: zero-crossing first-derivative and chemometric-based spectrophotometric artificial neural network (ANN). The proposed methods were used for the simultaneous estimation of two closel...

Spectrophotometric Methods for Simultaneous Determination of Amlodipine Besylate and Atenolol in Their Tablet Dosage Form.

Guang pu xue yu guang pu fen xi = Guang pu
Three simple, specific, accurate and precise spectrophotometric methods are developed for simultaneous determination of amlodipine besylate (AM) and atenolol (AT) in tablets. The first method is dual wavelength spectrophotometry (DW). The second meth...

[Research on the Spectrophotometry for Determination of Flavonoids in Waste Residue of Stevia Rebaudiana].

Guang pu xue yu guang pu fen xi = Guang pu
A spectrophotometric method for the determination of flavonoids content in Waste Residue of Stevia Rebaudiana was established by comparing the UV-Vis spectra with three spectrophotometric methods: Direct, AlCl3 and NaNO2-Al (NO3)3-NaOH method. The ef...

[Research on Modeling Method for Chlorophyll Content Fine Measurement Based on Neural Network].

Guang pu xue yu guang pu fen xi = Guang pu
Aiming at SPAD values of living plant leaf chlorophyll content affected easily by the blade thickness, water content, etc, a fine retrieval method of chlorophyll content based on multiple parameters of neural network model is presented. The SPAD valu...

A NEW SPECTROPHOTOMETRIC METHOD FOR THE ASSAY OF LISINOPRIL.

Revista medico-chirurgicala a Societatii de Medici si Naturalisti din Iasi
AIM: A new spectrophotometric method for the assay of lisinopril using 2,4-dinitrophenol as reagent is described.