Silver-Enhanced Reduction of 2,3,5-Triphenyl-2H-tetrazolium by Semicarbazide for the Spectrophotometric Determination of Traces of Silver(I)

Nagaraja, Padmarajaiah; Kumar, M. S. Hemantha; Yathirajan, H. S.

doi:10.2116/analsci.18.815

Cited by 16 publications

(11 citation statements)

References 8 publications

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“…A comparison of other developed CKM-SPM methods is provided in Table 1 and our method is found to possess reasonably high sensitivity with low limit of detection. Majority of the such methods given in Table 1 involve expensive and rarely available chemicals, while some of them are based on activators [17,29,30] and also require additional chemicals as activators [21,24,25,33].…”

Section: Discussionmentioning

confidence: 99%

“…Generally speaking, the catalyzed reactions for Ag(I) determination can be divided into two categories; one type is redox reactions between a chromogenic reductant, an organic compound [17] and an oxidant such as persulfate [18] and peroxidisulfate [19][20][21][22][23][24][25] or hydrogen peroxide. The other methods for Ag(I) determination involve ligand exchange reactions between hexacyanoferrate(II) and a chromogenic organic ligand [26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

“…The range of determination is also very narrow and the method involves an elevated temperature of 80°C for high sensitivity, which restricts its applicability under normal experimental conditions [30]. A review of the published catalytic kinetic methods involving spectrophotometric techniques along with indicator reaction system, dynamic range of detection (DRD), and other general characteristics of these methods are provided in Table 1 [17,18,21,24,25,27,29,30,32,33].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kinetic determination of silver at trace level based on its catalytic effect on a ligand substitution reaction

Naik

Tiwari

Singh

et al. 2008

Transition Met Chem

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It is observed that Ag(I) catalyzes the rate of substitution of phenylhydrazine (PhNHNH 2 ) into hexacyanoferrate(II), producing a cherry red colored complex, [Fe(CN) 5 PhNHNH 2 ] 3-. The reaction was monitored at 488 nm leading to the formation of the complex under the conditions: [Fe(CN) 6 ] 4-(5.0 9 10 -3 mol dm -3 ), PhNHNH 2 (2.0 9 10 -3 mol dm -3 ), temperature (25 ± 0.1°C), pH (2.8 ± 0.02), and ionic strength, I (0.02 mol dm -3 ), (KNO 3 ). Under optimum conditions, absorbance at fixed times (A t ) is linearly related to Ag(I) in the concentration range 10.79-97.08 ng cm -3 , in the presence of several diverse ions. The highest percentage error and relative standard deviations in the entire range of Ag(I) determination are found to be 2.5% and 0.16, with a detection limit of 8.75 ng cm -3 of silver(I). The experimental accuracies expressed in terms of percentage recoveries are in the range of 97.87-102.50. The method was successfully applied for the determination of Ag(I) in a few synthetic samples and found to be in good agreement with those obtained from atomic absorption spectrophotometry (AAS). The validity of the proposed method has also been tested for Ag(I) determination in spiked drinking water samples. The present catalytic kinetic method (CKM) is highly sensitive, selective, reproducible, and inexpensive. A review of recently published catalytic spectrophotometric methods for determination of Ag(I) has also been presented for comparison.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kinetic determination of silver at trace level based on its catalytic effect on a ligand substitution reaction

Naik

Tiwari

Singh

et al. 2008

Transition Met Chem

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“…High-performance liquid chromatography is the method used for determination of sliver, 6 atomic absorption spectrometry (AAS), [7][8][9][10] inductively coupled plasma atomic emission spectrometry (ICP-AES), 11 also, inductively coupled plasma mass spectrometry (ICP-MS), 12,13 kinetic, [14][15][16][17] capillary zone electrophoresis (CZE), 18 flow injection analysis (FIA), 19 fluorimetric, 20 and spectrophotometric. [21][22][23][24][25][26][27][28][29][30][31][32][33]…”

Section: Introductionmentioning

confidence: 99%

Cloud Point Extraction for Pre-Concentration and Spectrophotometric Determination of Trace Amounts of Silver Ions

Ghali¹

2020

ijddt

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During the last years, the cloud point extraction was applied for determination, separation, and enrichment of the elements. The current study used cloud point extraction (CPE) for the extraction of Ag(I) ions pre-concentration from watery solutions by a non-ionic surfactant (Triton X-114) and chelating agent a 6-(4-bromo-phenylazo)m-anisidine[6-(4-BrPAA)], then estimation by using the spectrophotometry at 514 nm. Several condition effects on the efficiency of the cloud-point extraction included Triton X-114 concentration, [6-(4-BrPAA)] concentration, pH, time, and incubation temperature. The silver reacts with [6-(4-BrPAA)] to produce complex at a ratio of one to one. 0.009 to 1.5 μg mL-1 is the range of linearity. The detection limit and quantification of Ag(I) ion were 0.0054 and 0.0182 μg mL-1, respectively. The interference of the cations was examined. The cloud-point extraction was used for the evaluation of silver concentration in the water specimen.

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“…Therefore, its trace determination in water and environmental samples is important. There are different methods for Ag(I) determination, like , high performance liquid chromatography (HPLC) 6 , atomic absorption spectrometry (AAS) 7,8 , kinetic [9][10][11][12] , capillary zone electrophoresis (CZE) 13 , flow injection analysis (FIA) 14 , fluorimetric 15 and spectrophotometric [16][17][18][19][20][21][22][23][24][25][26][27][28] . Spectrophotometric methods still the most commonly used tools due to the common availability of instrumentation, the simplicity, speed and the accuracy of the technique still make spectrophotometric methods attractive.…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric Micro determination of Silver(I) using Meloxicam as a New Analytical Reagent

Shah¹

2016

Orient. J. Chem

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A new chromogenic reagent, meloxicam was used for highly sensitive, selective and rapid method for the determination of silver based on the rapid reaction of silver(I) with meloxicam. In the presence acetate buffer solution of pH 4.6 and Triton X-100 as an optimum medium, meloxicam reacts with silver to form a yellow complex of molar ratio 1:1 (silver to meloxicam). The molar absorptivity of the formed complex was calculated to be 1.124 x 10 4 L mol -1 cm -1 at 412 nm. Beer's law is obeyed in the range of 1.0-15.0 µg mL -1 . The relative standard deviation for six replicate samples of 7.0 µg mL -1 was 1.33%. The limits of detection and quantification were also calculated. Finally the repeatability, accuracy and the effect of interfering ions on the determination of silver ion were evaluated. The method was applied successfully for determination silver in some water samples.

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Silver-Enhanced Reduction of 2,3,5-Triphenyl-2H-tetrazolium by Semicarbazide for the Spectrophotometric Determination of Traces of Silver(I)

Cited by 16 publications

References 8 publications

Kinetic determination of silver at trace level based on its catalytic effect on a ligand substitution reaction

Kinetic determination of silver at trace level based on its catalytic effect on a ligand substitution reaction

Cloud Point Extraction for Pre-Concentration and Spectrophotometric Determination of Trace Amounts of Silver Ions

Spectrophotometric Micro determination of Silver(I) using Meloxicam as a New Analytical Reagent

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