Maryam Abbasi Tarighat

Persian Gulf University | PGU · Department of Chemical Engineering

Colorimetric sensors have a number of advantages, including easy fabrication, rapid quantification, great sensitivity and selectivity, and naked-eye detection. Using Fe3O4 nanoparticles, we present a simple and effective nano-sensor array for colorimetric detection of arginine and ascorbic acid. When utilized in biodetection, however, changes in th...

Spectroscopy methods, as the basic analytical instrumentation methods, are employed in different sciences. They have a wide range of applications in chemistry. Small spectrometers are divided into laboratory portable instruments, field analyzers, and process analyzers. Miniaturized spectroscopic instruments are one class of portable spectrometers....

Separation instruments including gas chromatography, high pressure/performance liquid chromatography, capillary electrophoresis, and ion chromatography have become a part of most of the analytical laboratories. These methods are primarily used for the separation of complex samples and quantitation of a target analyte in the sample. Some of these in...

Metal oxide semiconductor sensor have a drawback of similar gas sensing response to homogeneous gases. Taking H2 and CO with similar properties (reducing gases), these sensors cannot detect the concentrations of both gases, because the MOS sensors have cross-sensitive behavior to H2 and CO. In this paper, SnO2-Mn3O4 nanocomposites are prepared by s...

The binding of curcumin on the surface of AgNPs-sodium dodecyl sulfate (SDS)-multi-walled carbon nanotubes–glassy carbon electrode (CM/AgNPs/SDS/MWCNTs) was reported for simultaneous electrochemical determination of dopamine (DA), uric acid (UA) and guanine (GU). Morphological properties of modified electrodes surfaces were characterized using diff...

In the original version of this article unfortunately the first author’s family name change has been missed to update. Instead of Motahhareh Haghnegahdar, it should be Negar Haghnegahdar. This has been corrected by publishing this correction article.

A Schiff base (E)-2((3-methylbenzilidene) amino) phenol (EMBAP)/multi-walled carbon nanotube modified carbon paste electrode was applied to the selective and accurate determination of Hg²⁺ and Pb²⁺ ions by voltammetric methods. The morphology of electrodes surface was characterized, and a density functional theory (DFT) based on the interaction of...

A new micelle-mediated extraction method for the pre-concentration of trace amounts of Cu2+ and Zn2+ as a prior step to their simultaneous spectrophotometric determination has been developed in various samples. The analytes were complexed with new synthesized ligand 4,4′-((4-chlorophenyl)methylene)bis(1,3-diphenyl-1H-pyrazol-5-ol) (CPBMPY) and Trit...

Simultaneous spectrophotometric determination of a mixture of overlapped complexes of Fe(3+), Mn(2+), Cu(2+), and Zn(2+) ions with 2-(3-hydroxy-1-phenyl-but-2-enylideneamino) pyridine-3-ol(HPEP) by orthogonal projection approach-feed forward neural network (OPA-FFNN) and continuous wavelet transform-feed forward neural network (CWT-FFNN) is discuss...

Continuous wavelet transform together with zero-crossing technique was applied to the overlapping visible spectra, as a very simple and accurate method, for the simultaneous determination of phosphate and silicate without any prior separation steps. Daubechies-4, Symlet 8, and Meyer continuous wavelet transforms for signal treatments were found to...

New complexes of Cu(2+), Hg(2+), and Cd(2+) with a recently synthesized Schiff base derived from 2-(3-hydroxy-1-methylbut-2-enylideneamino)pyridine-3-ol were applied for their simultaneous determination with artificial neural networks. A new analytical method using principal component-feed forward neural networks (PC-FFNNs) and principal component-...

A new and simple strategy is applied to resolve kinetic profile for the reaction of an analyte in unknown matrices, using standard addition method (SAM). The proposed method uses kinetic spectrophotometric data obtained by standard addition of analyte into unknown mixtures followed by the reaction of analyte with a proper reagent. The proposed meth...

BACKGROUNDA simple, selective and sensitive multi-component method for the simultaneous determination of Zn2+, Mn2+ and Fe3+ based on complex formation with 2-benzylspiro[isoindoline-1,5′-oxazolidine]-2′,3,4′-trione using artificial neural networks is proposed.RESULTSThe analytical data showed that metal-to-ligand ratios in Zn2+ and Fe3+ complexes...

A multicomponent analysis method for the simultaneous spectrophotometric determination of the Cd2+, Cu2+ and Zn2+ based on complexe formation with dimethyl-spiro[isobenzofurane-1, 6'-pyrorolo[2, 3-d] pyrimidine]-2', 3, 4, 5'(1'H,3'H,7'H) tetraone using wavelet transformation- feed forward neural network is proposed. The analytical data showed that...

A simple and sensitive spectrophotometric method to the simultaneous determination of Mn(2+) and Fe(3+) in foods, vegetable and water sample with the aid of artificial neural networks (ANNs) is described. It relies on the complexation of analytes with recently synthesised bis pyrazol base ligand as 4,4'[(4-cholorophenyl)methylene] bis(3-methyl-1-ph...

The present work examine the capability of standard addition method to correct the matrix effect and the advantages of the curve isolation of data using H-point standard addition method (HPSAM) and H-point curve iso- lation method (HPCIM) for determination in unknown mixtures. By a suc- cessive standard addition of the analyte was performed. The av...

Oxyhydroxy cobalt CoO(OH) nanoparticles (Co-NPs) were prepared in horse spleen apoferritin (HsAFr) cavity. Transmission electron microscopy revealed the particle size was 5.5-6 nm. Mineralization effect on HsAFr was investigated by fluorescence and far-UV circular dichroism (far-UV CD) spectroscopies. The far-UV CD experiments indicated an increase...

Ratio spectra-continuous wavelet transformation was used for the simultaneous determination of ternary mixtures of copper, cobalt and nickel without prior separation steps. The method is based on the complexation reaction of these cations with 1-(2-pyridylazo)-2-naphthol (PAN) in triton X-100 micellar media at pH 8.0. The results showed that Cu(II)...

This work presents a simple, rapid, and novel method for simultaneous determination of binary mixtures of some surfactants using continuous wavelet transformation. The method is based on the difference in the effect of surfactants Cetyltrimethylammoniumbromide (CTAB), dodecyl trimethylammonium bromide (DTAB), cetylpyridinium bromide (CPB) and Trito...

Wavelet transformation of kinetic profiles as a new and simple method was developed for the simultaneous determination of binary mixtures without prior separation steps. The mathematical explanation of the procedure is illustrated. Daubechies (db), symlet (sym) and discrete meyer wavelet (meyr) from the family of wavelet transforms were selected an...

New complexes of Co(2+), Ni(2+), Cu(2+) and Zn(2+) with a recently synthesized Schiff base derived from 3,6-bis((aminoethyl)thio)pyridazine were applied for their simultaneous determination with artificial neural networks. The analytical data show the ratio of metal to ligand in all metal complexes is 1:1. The absorption spectra were evaluated with...

This work presents novel and very simple spectrophotometric methods by ratio spectra–continuous wavelet transformation for the simultaneous determination of ternary mixtures of calcium, magnesium and zinc without prior separation steps. The methods are based on the complexation reaction of these elements with bromopyrogallo red (BPR) at pH 9.4. The...

In the present study, chemometric analysis of visible spectral data of phospho-and silico-molybdenum blue complexes was used to develop artificial neural networks (ANNs) for the simultaneous determination of the phosphate and silicate. Combinations of principal component analysis (PCA) with feed-forward neural networks (FFNNs) and radial basis func...

This work presents a new and simple strategy for solving matrix effects using combination of H-point curve isolation method (HPCIM) and H-point standard addition method (HPSAM). The method uses spectrophotometric multivariate calibration data constructed by successive standard addition of an analyte into an unknown matrix. By successive standard ad...

In this work feed-forward neural networks and radial basis function networks were used for the determination of enantiomeric composition of alpha-phenylglycine using UV spectra of cyclodextrin host-guest complexes and the data provided by two techniques were compared. Wavelet transformation (WT) and principal component analysis (PCA) were used for...