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RISoncentration of reactive dyes in water using MnFe2O4 magnetic nanoparticles and their simultaneous spectrophotometric determination by multivariate chemometrics methods
Adsorption techniques are widely used to remove certain classes of pollutants from
waters, especially those that are not easily biodegradable. Dyes represent one of the
problematic ...
Accommodating of resolved acid-base titration modelof uncalibratedinterferents during multivariate calibration models
Multivariate calibration methods are used for the determination of mixtures of acids (or bases) with similar pK by potentiometric titration. The linear titration equations of mixtures of acids are derived and the obtained ...
Analysis of sunset yellow in adulterated saffron from solvent components gradual change–visible spectra data processed by Rank Annihilation Factor Analysis
Second-order calibration is used for second-order data. Such data are produced by instruments that give a matrix of responses for a single measured standard or unknown sample. This allows determination of analyte of interest ...
Accommodating of resolved chemical kinetic model of uncalibratedinterferents during multivariate calibration models
The simultaneous determination of several analytes based on kinetic spectrophotometric method is usually performed by chemometrics method, especially in cases where the analytes react with a common reagent. One of the most ...
Direct Analysis of Sunset Yellow in Commercial Saffron Using Gradual Solvatochromic Effect Followed by Rank Annihilation Factor Analysis (RAFA)
In this study, a new spectrophotometric method for the determination of sunset yellow in adulterated Saffron without pre-separation has been developed.It was found that a second order spectra data matrix of Sunset ...
Application of differential spectra of different media during multivariate calibration to eliminate unmodeled interferents in unknown samples
The first order calibration methods cannot correctly predict the concentration of analytes in unknown samples with unmodeled interferents[1]. So, developing the methods that can eliminate this limitation, without the need ...
Evaluation of chemical hydride generation for simultaneous spectrophotometric determination of arsenic and antimony using partial least squaresmultivariate calibration
Hydride generation spectrophotometric methods using NaBH4 – acid reduction is well known techniques for analysis of arsenic and antimony [1]. A batch chemical hydride generation system was developed for the simultaneous ...
Evaluation of digital camera as a portable colorimetric sensor for low-cost determination of inorganic arsenic (III) in industrial wastewaters by chemical hydride generation assisted-Fe(III) − 1, 10-phenanthroline as a green color agent
This research presents a novel, simple and green method for colorimetric determination of As(III) using a digital camera as the colorimeter. It is based on chemical hydride generation of arsine (AsH3) from acidic solution ...
Second-Order Advantage From Micelle Concentration Gradual Change–Visible Spectra Data
Second-order calibration is used for second-order data. Such data is produced by instruments that give a matrix of responses for a
single measured standard or unknown sample. This allows for determination of analyte ...
Kinetic spectrophotometric method for determination of sodium azide using experimental design for optimization of the procedure
Sodium azide has been widely used as major component in many different industries such as production of pesticides, anti-hypertensives, anti-HIV drugs and explosives as well as preservatives[1-4]. Furthermore, sodium azide ...