A sensitive and highly selective extractive spectrophotometric method for the determination of palladium

Anjaneyulu, Y.; Sekhar, K. Chandra; Reddy, M. R. P.; Sarma, Rajdeep

doi:10.1007/bf01201983

Cited by 4 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…38 From a Hristov et al: Extraction-Chromogenic Systems for Vanadium(V) ... chemical point of view, it can be classified as a cationic ion-association reagent. 39,40 Various extraction-chromogenic systems containing transition metals, XMZ and PAR have been described in the literature. [40][41][42][43][44] However, to the best of our knowledge, there are no reports involving both XMZ and thiazolylazo reagents.…”

Section: Introductionmentioning

confidence: 99%

“…39,40 Various extraction-chromogenic systems containing transition metals, XMZ and PAR have been described in the literature. [40][41][42][43][44] However, to the best of our knowledge, there are no reports involving both XMZ and thiazolylazo reagents. In the present paper, we discuss three liquid-liquid extraction-chromogenic systems containing V(V), XMZ and thiazolylazo dye {TAR, MTAR or 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR)}.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Extraction-Chromogenic Systems for Vanadium(V) Based on Azo Dyes and Xylometazoline Hydrochloride

Hristov¹,

Milcheva²,

Gavazov³

2019

ACSi

View full text Add to dashboard Cite

Liquid-liquid extraction-chromogenic systems for vanadium(V) based on xylometazoline hydrochloride (XMZ) and azo derivatives of resorcinol (ADRs) were studied. The following ADRs were used: 4-(2-thiazolylazo)resorcinol (TAR), 5-methyl-4-(2-thiazolylazo)resorcinol (MTAR), and 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR). Concentration of the reagents, pH of the aqueous medium and shaking time were subjects of optimization experiments. The chloroform-extracted ternary complexes were of composition 1:1:1. The molar absorptivity coefficients (ε λ), absorption maxima (λ), constants of extraction (Log K), and fractions extracted (E%) were found to be ε 553 = 2.50 × 10 4 dm 3 mol-1 cm-1 , Log K = 3.5, and E = 96% (ADR = TAR); ε 550 = 1.88 × 10 4 dm 3 mol-1 cm-1 , Log K = 3.4, and E = 98% (ADR = MTAR); and ε 554 = 2.62 × 10 4 dm 3 mol-1 cm-1 , Log K = 5.0, and E = 99.5% (ADR = HTAR). The Sandell's sensitivities and Beer's law limits were determined as well.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Extraction-Chromogenic Systems for Vanadium(V) Based on Azo Dyes and Xylometazoline Hydrochloride

Hristov¹,

Milcheva²,

Gavazov³

2019

ACSi

View full text Add to dashboard Cite

show abstract

“…Several methods have been reported for the determination of SCG in pharmaceutical preparations such as spectrophotometry [3,4], electrophoresis [5], electrochemical [6,7] and HPLC methods [8][9][10][11][12][13][14]. OXMT has also been analyzed by several methods in pharmaceutical preparations such as spectrophotometry [3,[15][16][17][18][19][20][21][22][23], capillary electrophoresis [24,25], gas chromatography [26,27] and HPLC [28][29][30][31][32][33][34][35]. To the best of our knowledge, Abdel-Aziz et al [3] developed new accurate, sensitive and selective spectrophotometric and spectrofluorimetric methods for determination of SCG and OXMT.…”

Section: Introductionmentioning

confidence: 99%

Spectral resolution and simultaneous determination of oxymetazoline hydrochloride and sodium cromoglycate by derivative and ratio-based spectrophotometric methods

et al. 2015

View full text Add to dashboard Cite

Sodium cromoglycate (SCG) and oxymetazoline hydrochloride (OXMT) are administered in combination for effective treatment of nasal congestion and allergy. In this work, SCG was determined using direct spectrophotometry by measuring its zero order absorption spectra at its λmax 320.6 nm where OXMT showed zero absorbance. On the other hand, four simple, sensitive and precise spectrophotometric methods were developed and validated for the determination of OXMT in the presence of SCG in their laboratory prepared mixtures and pharmaceutical formulation, without preliminary separation; Method A: first derivative spectrophotometric method [ 1 D], Method B: first derivative of ratio spectra method [ 1 DD], Method C: ratio difference spectrophotometric method [RDSM] and Method D: ratio subtraction method [RSM]. Ratio manipulating methods (Method B, C and D) were done using divisor of 10.00 µg/mL SCG. Linear correlation was obtained in range 4-22 µg/mL for OXMT by methods A, B and D and 6-22 µg/mL for method C. All methods were validated in compliance with the International Conference on Harmonization (ICH) guidelines and satisfactory results were obtained. No significant difference was noted between the developed methods and the official one with respect to accuracy and precision.

show abstract

“…Several different methods have been used for the determination of oxymetazoline hydrochloride OMCl, including high-performance liquid chromatography (HPLC), [2][3][4][5][6][7][8] gas chromatography, 9 a two-phase titration procedure 10 and spectrophotometric methods. [11][12][13][14][15][16] No potentiometric methods have yet been reported for the determination of OM. In the present work, a plastic membrane electrode selective for the oxymetazoline cation was constructed and its performance characteristics were studied.…”

Section: Introductionmentioning

confidence: 99%

Construction and Analytical Applications of Plastic Membrane Electrode for Oxymetazoline Hydrochloride

Issa

Zayed²

2004

ANAL. SCI.

View full text Add to dashboard Cite

A new oxymetazoline (OM) ion-selective PVC membrane electrode based on the ion associate of OM with phosphotungstic acid was prepared. The electrode exhibits a linear response with a mean calibration graph slope of 57.16 mV decade -1 at 25˚C within the concentration range of 1.96 × 10 -5 -1 × 10 -2 M OMCl. The change in the pH within the range of 1.0 -9.4 did not affect the electrode performance. The standard electrode potentials were determined at different temperatures and used to calculate the isothermal coefficient of the electrode (-0.001233 V). The electrode showed a very good selectivity for OM with respect to a large number of inorganic cations and compounds. The standard addition method and potentiometric titration were applied to the determination of (OM) with RSD not exceeding 1.19%.

show abstract

A sensitive and highly selective extractive spectrophotometric method for the determination of palladium

Cited by 4 publications

References 9 publications

Extraction-Chromogenic Systems for Vanadium(V) Based on Azo Dyes and Xylometazoline Hydrochloride

Extraction-Chromogenic Systems for Vanadium(V) Based on Azo Dyes and Xylometazoline Hydrochloride

Spectral resolution and simultaneous determination of oxymetazoline hydrochloride and sodium cromoglycate by derivative and ratio-based spectrophotometric methods

Construction and Analytical Applications of Plastic Membrane Electrode for Oxymetazoline Hydrochloride

Contact Info

Product

Resources

About