Simultaneous determination of calcium, magnesium and zinc in different foodstuffs and pharmaceutical samples with continuous wavelet transforms

Afkhami, Abbas; Madrakian, Tayyebeh; Tarighat, Maryam Abbasi

doi:10.1016/j.foodchem.2007.12.078

Cited by 46 publications

(17 citation statements)

References 34 publications

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“…In the literature, due to a strong environmental and biological impact, trace metal-ion determinations have received particular attention in the last few years. 4 For phases I and II, more complicated matrices are used as pharmaceutical samples. Five vitamin tablets of two different types of "Theragran" (Theragran (stress formula) (T) and Theragran-M (TM)), were weighed and finally powdered.…”

Section: Selective Determination Of Ca(ii) Ions In Different Pharmacementioning

confidence: 99%

“…Magnesium actives over 100 enzymes and helps nerve and muscle function. 3,4 However, if they are in excess, they can also play an important role in the progression of several types of damage to the human body, including disturbances in energy metabolism or increasing oxidative stress. Depression can also be related to high and low levels of calcium and/or magnesium too, with low levels often being associated with anxieties as well.…”

Section: Introductionmentioning

confidence: 99%

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Solid-Phase Extractors Based on 8-Aminoquinoline and 2-Aminopyridine Covalently Bonded to Silica Gel for the Selective Separation and Determination of Calcium in Natural Water and Pharmaceutical Samples

Soliman¹,

Ahmed

2010

ANAL. SCI.

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Section: Selective Determination Of Ca(ii) Ions In Different Pharmacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Solid-Phase Extractors Based on 8-Aminoquinoline and 2-Aminopyridine Covalently Bonded to Silica Gel for the Selective Separation and Determination of Calcium in Natural Water and Pharmaceutical Samples

Soliman¹,

Ahmed

2010

ANAL. SCI.

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“…Particularly, PLS and PCR approaches are preferable calibration techniques mainly because they provide an efficient quantitative resolution of complex mixtures of drugs. [21][22][23][24][25][26][27][28][29][30][31][32][33] In the work presented in this study, two different chemometric calibration approaches, PLS and PCR were applied for the quantification and dissolution testing of ZID and LAM in commercial tablets. Both PLS and PCR approaches don't require any prior separation step such as extraction and precipitation etc.…”

Section: Introductionmentioning

confidence: 99%

Comparative Application of PLS and PCR Methods to Simultaneous Quantitative Estimation and Simultaneous Dissolution Test of Zidovudine - Lamivudine Tablets

Üstündağ

Dinç

Özdemir

et al. 2015

ACSi

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In the development strategies of new drug products and generic drug products, the simultaneous in-vitro dissolution behavior of oral dosage formulations is the most important indication for the quantitative estimation of efficiency and biopharmaceutical characteristics of drug substances. This is to force the related field's scientists to improve very powerful analytical methods to get more reliable, precise and accurate results for the quantitative analysis and dissolution testing of drug formulations. In this context, two new application of partial least squares (PLS) and principal component regression (PCR) were applied for the simultaneous quantitative estimation and dissolution testing of zidovudine (ZID) and lamivudine (LAM) in a tablet dosage form. The results obtained in this study strongly encourage us to use them for the quality control, the routine analysis and the dissolution test of the marketing tablets containing ZID and LAM drugs.

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“…Also Dinç and co-workers, [24][25][26][27][28][29] used the ratio spectra-CWT with zero-crossing technique for the multicomponent spectral analysis of ternary mixtures of three active compounds with overlapping spectra. Recently, we applied CWT for simultaneous determination of metal ions in different mixtures, 30 determination of enantiomeric ratio, 31 simultaneous determination of binary mixture of surfactants and simultaneous kinetic determination of binary mixture. 32,33 Recently, we successfully applied artificial neural networks (ANNs) for quaternary determination of Co 2+ , Zn 2+ , Ni 2+ and Cu 2+ using a recently synthesized Schiff base.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous spectrophotometric determination of Cu(II), Co(II) and Ni(II) using ratio spectra-continuous wavelet transformation in some food and environmental samples

Tarighat¹,

Afkhami²

2012

J. Braz. Chem. Soc.

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A razão entre o espectro contínuo e a transformada "wavelet" foi usada para a determinação simultânea de misturas ternárias de cobre, cobalto e níquel sem separação prévia. O método é baseado na reação de complexação destes cátions com 1-(2-piridilazo)-2-naftol (PAN) em meio micelar triton X-100, pH 8,0. Os resultados mostraram que Cu(II), Co(II) e Ni(II) foram determinados simultaneamente nos intervalos de concentração de 0,20-4,0, 0,20-4,0 e 0,50-7,0 mg L -1 , respectivamente. Foram selecionadas diferentes wavelets-mãe, da família das transformadas wavelet no contínuo, e aplicadas sob condições ótimas nas determinações multi-componentes. O método foi testado pela análise de várias misturas ternárias sintéticas de íons Cu(II), Co(II) e Ni(II). Usando as condições otimizadas, o método proposto foi aplicado com sucesso na determinação simultânea destes metais em algumas amostras reais incluindo comprimidos multivitamínicos, chá, cevada, espinafre, leite em pó, solo, água do mar e amostras de água de torneira.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), Co(II) and Ni(II) could be determined simultaneously in the ranges 0.20-4.0, 0.20-4.0 and 0.50-7.0 mg L -1 , respectively. Different mother wavelets from the family of continuous wavelet transforms were selected and applied under the optimal conditions for multi-component determinations. The method was tested by analyzing various synthetic ternary mixtures of Cu(II), Co(II) and Ni(II) ions. Under the working conditions, the proposed method was successfully applied for the simultaneous determination of these metals content evaluation in some real samples including multivitamin tablet, tea, barley, spinach, chocolate, milk powder, soil, sea water and tap water samples.

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Simultaneous determination of calcium, magnesium and zinc in different foodstuffs and pharmaceutical samples with continuous wavelet transforms

Cited by 46 publications

References 34 publications

Solid-Phase Extractors Based on 8-Aminoquinoline and 2-Aminopyridine Covalently Bonded to Silica Gel for the Selective Separation and Determination of Calcium in Natural Water and Pharmaceutical Samples

Solid-Phase Extractors Based on 8-Aminoquinoline and 2-Aminopyridine Covalently Bonded to Silica Gel for the Selective Separation and Determination of Calcium in Natural Water and Pharmaceutical Samples

Comparative Application of PLS and PCR Methods to Simultaneous Quantitative Estimation and Simultaneous Dissolution Test of Zidovudine - Lamivudine Tablets

Simultaneous spectrophotometric determination of Cu(II), Co(II) and Ni(II) using ratio spectra-continuous wavelet transformation in some food and environmental samples

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