Orthogonal projection approach and continuous wavelet transform-feed forward neural networks for simultaneous spectrophotometric determination of some heavy metals in diet samples

Tarighat, Maryam Abbasi

doi:10.1016/j.foodchem.2015.07.034

Cited by 15 publications

(4 citation statements)

References 32 publications

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“…Additionally, the applied instrument is expensive and is not available in most laboratories. Spectrophotometric methods have several advantages, including popularity, availability of instrumentation, wide applicability, good precision, and acceptable accuracy [20,[27][28][29][30][31][32][33][34][35]. These methods, however, are only appropriate when nonlinearity is not present in the multivariate data.…”

Section: Introductionmentioning

confidence: 99%

Multivariate Simultaneous Determination of Some PAHs in Persian Gulf Oil-Contaminated Algae and Water Samples Using Miniaturized Triton X-100-Mediated Fe3O4 Nanoadsorbent and UV-Vis Detection

Tarighat,

Behroozi,

Abdi

et al. 2023

Separations

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This research shows the development of a miniaturized solid-phase extraction method with UV-Vis detection for simultaneous determination of dibenzofuran, fluoranthene and phenanthrene using chemometrics approaches. After synthesis of Fe3O4 nanoparticles (Fe3O4 NPs), the surface of the nanoparticles was modified by Triton X100 coating. The influence of extraction solvent and volume, concentration of Triton X100, extraction time, and sample pH were studied and optimized. Due to high spectral overlapping, resolving ternary mixtures for simultaneous determination of targets with classical analytical methods is impossible. Therefore, the recorded UV-Vis spectra were transformed using continuous wavelet transform and then subjected to artificial neural networks (ANNs). The Db4 mother wavelet was used as the better mother wavelet. For simultaneous detection of analytes, a comparison of feed-forward back-propagation and radial basis function networks was accomplished. The calibration graphs showed linearity in the ranges of 2.4–250 ng mL−1, 50–3750 ng mL−1, and 48–5000 ng mL−1 with a limit of detection of 0.58, 9.5 ng mL−1, and 12.5 ng mL−1 under optimal conditions for phenanthrene, fluoranthene, and dibenzofuran, respectively. The limit of quantitation was achieved at 3.52 ng mL−1, 16.35 ng mL−1, and 31.3 ng mL−1 for phenanthrene, fluoranthene and dibenzofuran, respectively. The method involving TX-100-coated Fe3O4 NPs in a liquid sample phase for analyte extraction, followed by ethanol desorption and UV-Vis detection, was successfully applied for the determination of polycyclic aromatic hydrocarbons in oil-field water and algae samples.

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Section: Introductionmentioning

confidence: 99%

Multivariate Simultaneous Determination of Some PAHs in Persian Gulf Oil-Contaminated Algae and Water Samples Using Miniaturized Triton X-100-Mediated Fe3O4 Nanoadsorbent and UV-Vis Detection

Tarighat,

Behroozi,

Abdi

et al. 2023

Separations

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“…For the accurate and precise determination of toxic metal ions in food, modern instrumental techniques such as inductively coupled plasma-Mass spectrometry (ICP-MS) (Nardi et al, 2009), ame /graphite furnace atomic absorption spectrometry (FAAS/GFAAS) (Abbasi Tarighat, 2016;Sánchez-Moreno et al, 2010), and electroanalytical techniques ((Jin Mei & Ainliah Alang Ahmad, 2021)) are important. Because of their low concentration and strong ion impact interference from numerous food additives, proteins, bases, salts, and acids, determining the presence of heavy metal contamination in food samples is signi cantly more challenging ( (Li et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Preconcentration and Determination of Cu(II), Ni(II), and Co(II) in Food and Environmental Samples by the Application of Chelate Adsorption on Amberlite XAD-1180

Topuz

Altinişik

2023

Food Anal. Methods

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A simultaneous preconcentration and determination procedure for solid phase extraction on AXAD-1180 as 2,6-dimethlmorpholinedithiocarbamate (DMMDTC) chelates and spectrophotometric determinations of Cu (II), Ni (II), and Co (II) in food and environmental samples is proposed in the present work. The effect of some SPE parameters, such as reagent amount, sample pH, eluent type, concentration, and volume, sample and eluent ow rate, and sample volume, on trace metal ion recovery (R%) for the method developed in the standard model solution medium was investigated. Cu(II), Ni(II), and Co(II) retained as DMMDTC complexes on Amberlite XAD-1180 were eluted with 10 mL of 1 M HNO 3 (in acetone). Foreign ions were also studied individually on the recovery of trace metal ions using the developed method. Cu(II), Ni(II), and Co(II) ions were preconcentrated and separated from the sample using the developed SPE method, and their concentrations were simultaneously determined using the UV-VIS spectrophotometric method.The spectrophotometric determination was made by measuring the absorbance of colored chelates of metal ions complexed with DMMDTC in a surfactant medium (1% Triton X-100) at wavelengths of 460, 328, and 342 nm for Cu(II), Ni(II), and Co(II), respectively. To test the method's accuracy, certi ed reference materials (CRM 1204 waste water and TMDA-70.2 Ontario lake water) were analyzed using the proposed method, and metal recoveries were calculated to be between 97.1% and 100.7%. The proposed method worked well with the wheat our sample. Wheat our has Cu(II) and Ni(II) contents of 2,16 µgmL − 1 and 0,56 µgmL − 1 , respectively.

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“…Copper can be considered either essential or hazardous to life and plays a substantial role in the environment (Fu and Yuan 2007 ; Horstkotte et al 2012 ; Gouda and Amin 2014 ; Tarighat 2016 ). As a micronutrient, copper is responsible for the proper functioning of several metalloenzymes and its deficiency reduces the activity of not only copper containing enzymes but also some enzymes that do not contain copper (Kamble et al 2011 ; Tarighat 2016 ). The deficiency of copper results in different health problems like anaemia, hair kinky, Wilson disease and jaundice (Nalawade et al 2015 ).…”

Section: Introductionmentioning

confidence: 99%

“…Several analytical techniques have been used for determination of copper, including atomic absorption spectrometry, atomic emission spectrometry, electroanalytical techniques, spectrophotometry, inductive coupled plasma-emission spectrometry, inductive coupled plasma-mass spectrometry, flow injection diode array spectrophotometry and X-ray fluorescence spectrometry (Pinto et al 2004 ; Kruanetr et al 2008 ; Gouda and Amin 2014 ; Nalawade et al 2015 ; Tarighat 2016 ). However, spectrophotometry methods are often preferred, as they involve inexpensive instrument, less labor-intensive, and provide comparable sensitivity when appropriate chromogenic reagents are available (Dalman et al 2002 ; Fu and Yuan 2007 ; Sabel et al 2010 ; Kamble et al 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric determination of Cu(II) in soil and vegetable samples collected from Abraha Atsbeha, Tigray, Ethiopia using heterocyclic thiosemicarbazone

2016

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Two selective and sensitive reagents, 2-acetylpyridine thiosemicarbazone (2-APT) and 3-acetylpyridine thiosemicarbazone (3-APT) were used for the spectrophotometric determination of Cu(II). Both reagents gave yellowish Cu(II) complex at a pH range of 8.0–10.0. Beer’s law was obeyed for Cu(II)–2-APT and Cu(II)–3-APT in the concentration range of 0.16–1.3 and 0.44–1.05 µg/mL, respectively. The molar absorptivity and of Cu(II)–2-APT and Cu(II)–3-APT were 2.14 × 104 at 370 nm, and 6.7 × 103 L/mol cm at 350 nm, respectively, while the Sandell’s sensitivity were 0.009 and 0.029 µg/cm2 in that order. The correlation coefficient of the standard curves of Cu(II)–2-APT and Cu(II)–3-APT were 0.999 and 0.998, respectively. The detection limit of the Cu(II)–2-APT and Cu(II)–3-APT methods were 0.053 and 0.147 µg/mL, respectively. The results demonstrated that the procedure is precise (relative standard deviation <2 %, n = 10). The method was tested for Cu(II) determination in soil and vegetable samples. Comparisons of the results with those obtained using a flame atomic absorption spectrophotometer for Cu(II) determination also tested the validity of the method using paired sample t test at the 0.05 level showing a good agreement between them.

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Orthogonal projection approach and continuous wavelet transform-feed forward neural networks for simultaneous spectrophotometric determination of some heavy metals in diet samples

Cited by 15 publications

References 32 publications

Multivariate Simultaneous Determination of Some PAHs in Persian Gulf Oil-Contaminated Algae and Water Samples Using Miniaturized Triton X-100-Mediated Fe3O4 Nanoadsorbent and UV-Vis Detection

Multivariate Simultaneous Determination of Some PAHs in Persian Gulf Oil-Contaminated Algae and Water Samples Using Miniaturized Triton X-100-Mediated Fe3O4 Nanoadsorbent and UV-Vis Detection

Simultaneous Preconcentration and Determination of Cu(II), Ni(II), and Co(II) in Food and Environmental Samples by the Application of Chelate Adsorption on Amberlite XAD-1180

Spectrophotometric determination of Cu(II) in soil and vegetable samples collected from Abraha Atsbeha, Tigray, Ethiopia using heterocyclic thiosemicarbazone

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