Simultaneous spectrophotometric determination of Sn(II) and Sn(IV) by mean centering of ratio kinetic profiles and partial least squares methods

Madrakian, Tayyebeh; Afkhami, Abbas; Moein, Roshanak; Bahram, Morteza

doi:10.1016/j.talanta.2007.02.023

Cited by 23 publications

(15 citation statements)

References 33 publications

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“…PLS-1 factors were optimized. The number of latent variables (factors) for each ion was determined by the crossvalidation method leaving out one sample at a time (Madrakian et al 2007). The prediction error sum of squares (PRESS) for cross-validated models was calculated.…”

Section: Selection Of Appropriate Mother Wavelets and Analytical Paramentioning

confidence: 99%

Simultaneous spectrophotometric determination of phosphate and silicate in different water and soil samples using chemometrics approach

Tarighat

2015

Int. J. Environ. Sci. Technol.

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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 be suitable. The calibration graphs for estimation of complexes were obtained by measuring the wavelet coefficients at zero-crossing points for silicomolybdenum blue and phosphomolybdenum blue.The constructed calibration functions were tested by analyzing the composition of the different binary mixtures. The experimental data were also analyzed using partial least squares and first-order derivative spectrophotometric method. The proposed method was validated by simultaneous determination of phosphate and silicate in different environmental waters and soil samples. The results of proposed method have been compared with those predicted by partial least squares and standard methods.

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Section: Selection Of Appropriate Mother Wavelets and Analytical Paramentioning

confidence: 99%

Simultaneous spectrophotometric determination of phosphate and silicate in different water and soil samples using chemometrics approach

Tarighat

2015

Int. J. Environ. Sci. Technol.

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“…The excess use of tin in daily life as fungicides in crops, in food packaging, and as stabilizer for polyvinyl chloride may introduce the inorganic tin {Sn(II) and Sn(IV)} in the environment. Out of these two, Sn(II) seems to be more toxic as compared to Sn(IV) [2]. In the literature, there are numerous analytical methods for the measurement of tin which are based on sophisticated instruments [3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Rapid Extractive Spectrophotometric Method for the Determination of Tin with 6-Chloro-3-hydroxy-2-(2′-thienyl)-4-oxo-4H-1-benzopyran

Kataria

Sharma

2014

Advances in Chemistry

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An extractive spectrophotometric method for the determination of the trace amounts of tin has been carried out by employing 6-chloro-3-hydroxy-2-(2 -thienyl)-4-oxo-4H-1-benzopyran (in acetone) (CHTB) for the complexation of the metal ion in HCl medium. The colored species thus produced is quantitatively extracted into dichloromethane and shows the maximum absorbance at 432-437 nm. The method obeys Beer's law in the range 0.0-1.3 g mL −1 of tin with molar absorptivity and Sandell's sensitivity of 5.81×104 L mol −1 cm −1 and 0.0020 g Sn cm −2 , respectively, at 435 nm. The method is highly selective and free from the interference of a large number of elements including platinum metals. The ratio of metal to ligand in the extracted species is 1 : 2. Utilizing this method, the analysis of various synthetic and technical samples including gun metal and tin can have been carried out satisfactorily.

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“…Recently chemometrics methods, such as least square method and neural network method, have been developed rapidly and widely used in simultaneous determination of metal ions [22][23][24][25][26][27][28][29]. Ghasemi et al [28] used partial least squares to simultaneously determination Co 2+ , Cu 2+ and Ni 2+ .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of Cu2+, Zn2+, Cd2+, Hg2+ and Pb2+ by using second-derivative spectrophotometry method

Han

et al. 2011

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Simultaneous spectrophotometric determination of Sn(II) and Sn(IV) by mean centering of ratio kinetic profiles and partial least squares methods

Cited by 23 publications

References 33 publications

Simultaneous spectrophotometric determination of phosphate and silicate in different water and soil samples using chemometrics approach

Simultaneous spectrophotometric determination of phosphate and silicate in different water and soil samples using chemometrics approach

A Rapid Extractive Spectrophotometric Method for the Determination of Tin with 6-Chloro-3-hydroxy-2-(2′-thienyl)-4-oxo-4H-1-benzopyran

Simultaneous determination of Cu2+, Zn2+, Cd2+, Hg2+ and Pb2+ by using second-derivative spectrophotometry method

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