Spectrofluorimetric determination of iridium(IV) traces using 4-pyridone derivatives

Drušković, Vinka; Vojković, Vlasta; Miko, Slobodan

doi:10.1016/j.talanta.2003.08.031

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…Thus, there is an increasing demand for the development of analytical procedures, preferably simple, sensitive, and selective ones to broaden the horizon of the applicability of iridium and its complexes. Sophisticated techniques such as NAA (Miura et al, 2020), spectrofluorimetric (Druskovic et al, 2004), AAS (Ingo et al, 2008), voltammetry (Locatelli, 2013), atomic emission and flame emission spectrometry (Jackson and Qiao, 1992), ICP-OES (Zhang and Tian, 2015), ICP-MS (Yi and Masuda, 1996), sequential flow injection analysis (Khomutova et al, 2013), imprinted polymerbased method (Sid Kalal et al, 2013), and individual catalytic method (Kawamura et al, 2011) have been employed for the purpose. However, the wider application of these techniques is restricted by several factors such as instrumentation costs, technical know-how, and maintenance issues.…”

Section: Introductionmentioning

confidence: 99%

Radical scavenging capacity, antibacterial activity, and quantum chemical aspects of the spectrophotometrically investigated iridium (III) complex with benzopyran derivative

et al. 2022

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A comprehensive aqueous phase spectrophotometric study concerning the trace level determination of iridium (III) by its reaction with benzopyran-derived chromogenic reagent, 6-chloro-3-hydroxy-7-methyl-2-(2′-thienyl)-4-oxo-4H-1-benzopyran (CHMTB), is performed. The complexing reagent instantly forms a yellow complex with Ir (III) at pH 4.63, where metal is bound to the ligand in a ratio of 1:2 as deduced by Job’s continuous variations, mole ratio, and equilibrium shift methods. The complex absorbs maximally at 413–420 nm retaining its stability for up to 4 days. An optimum set of conditions have been set with respect to the parameters governing the formation of the complex. Under the set optimal conditions, the Ir (III)-CHMTB complex coheres to Beer’s law between 0.0 and 1.5 µg Ir (III) mL−1. The attenuation coefficient and Sandell’s sensitivity are, respectively, 1.18×105 L mol−1 cm−1 and 0.00162 μg cm−2 at 415 nm. The correlation coefficient (r) and standard deviation (SD) were 0.9999 and ± 0.001095, respectively, whereas the detection limit as analyzed was 0.007437 μg ml−1. The interference with respect to analytically important cations and complexing agents has been studied thoroughly. It is found that the majority of the ions/agents do not intervene with the formation of the complex, thus adding to the versatility of the method. The results obtained from the aforesaid studies indicate a simple, fast, convenient, sensitive, and versatile method for microgram analysis of iridium (III) using CHMTB as a binding ligand. Furthermore, the studied complex is subjected to the evaluation of antibacterial and antioxidant capacity by employing the Agar Diffusion assay and DPPH. radical scavenging method, respectively. The results obtained from the mentioned assays reveal that the investigated complex possesses significant potency as an antibacterial and antioxidant agent. Finally, the computational approach through DFT of the formed complex confirmed the associated electronic properties of the studied complex.

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Section: Introductionmentioning

confidence: 99%

Radical scavenging capacity, antibacterial activity, and quantum chemical aspects of the spectrophotometrically investigated iridium (III) complex with benzopyran derivative

et al. 2022

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“…This method has higher selectivity than most of the spectrophotometric methods of Iridium determination. 1,2,4,11,[24][25][26][27]…”

Section: Selectivity Of the Ir(iv) Determinationmentioning

confidence: 99%

“…[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Due to the wide usage of iridium in various industries (such as jewelry, electrical equipment, dental alloys, automobile, chemical, and electronics industries, the field of photography and aviation), it is important to develop efficient analytical methods for this metal determination in various samples. 22,23 Most of spectrophotometric methods for the Iridium determination are not enough sensi-tive, selective and need heating or extraction. 1,2,4,11,[24][25][26][27] For this reasons the goal of our research was to find the effective analytical reagents for spectrophotometric Ir(IV) determination using azolidones derivatives.…”

Section: Introductionmentioning

confidence: 99%

“…22,23 Most of spectrophotometric methods for the Iridium determination are not enough sensi-tive, selective and need heating or extraction. 1,2,4,11,[24][25][26][27] For this reasons the goal of our research was to find the effective analytical reagents for spectrophotometric Ir(IV) determination using azolidones derivatives. One of them was a new reagent -5-[2-(4-hydroxyphenyl)hydrazineylidene]-4-iminothiazolidin-2-one (HPIT).…”

Section: Introductionmentioning

confidence: 99%

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A New Reagent for Spectrophotometric Determination of Ir(IV): 5-[2-(4-Hydroxyphenyl) hydrazineylidene]- 4-iminothiazolidin-2-one (HPIT)

Tymoshuk

Oleksiv

Fedyshyn

et al. 2020

ACSi

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The paper presents a new azolidone derivative-5-[2-(4-hydroxyphenyl)hydrazineylidene]-4-iminothiazolidin-2-one (HPIT) studies and its interaction results with iridium(IV) ions. The Ir(IV) with this reagent in the pH = 5.0 without heating forms a stable complex (λ max = 328 nm). The stoichiometric ratio of Ir(IV) to the reagent in complex is 1:1. The molar absorptivity and Sandell's sensitivity are 5.57 × 10 3 L mol-1 cm-1 and 0.034 µg cm-2 respectively. The calibration curve is linear in the range of 1.0-11.5 µg mL-1 of Ir(IV) (R = 0.9996). The limit of detection is 0.4 µg mL-1. Based on the conducted investigation a rapid and simple, spectrophotometric method for the determination of Ir(IV) using 5-[2-(4-hydroxyphenyl)hydrazineylidene]-4-iminothiazolidin-2-one as a chromophoric reagent was developed. The iridium(IV) was determined in various synthetic mixtures and alloys.

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“…Iridium has been found to be an important rare noble metal and widely used in the making of precise alloys, apparatus, corrosion-resistant chemical wares and plug electrodes owing to its specific physical and chemical properties [1][2][3][4] . Since natural resources for iridium metal are limited and the demand for iridium in industry will continue to grow, it is important to find an effective separation process to recover iridium from low-grade ores or secondary resources.…”

Section: Introductionmentioning

confidence: 99%

Solvent Extraction of Iridium(IV) with the Petroleum Sulfoxide

Dong¹,

Huang²,

Liu³

2013

Asian J. Chem.

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The petroleum sulfoxide was used in the extraction of iridium(IV) from hydrochloric acid solution. Iridium(IV) was extracted quantitatively with petroleum sulfoxide in xylene. Sodium hydroxide solution could be used as stripping agent. Extraction parameters of Ir(IV), including petroleum sulfoxide concentration, contact time of aqueous and organic phases, organic/aqueous (O/A) phase ratio, hydrochloric acid concentration and sodium hydroxide concentration of aqueous phase, were studied in detail. In order to find an optimum condition to separate iridium and rhodium, solvent extraction experiments were performed from chloride solution by using petroleum sulfoxide as an extractant. A new process for the extraction of iridium by petroleum sulfoxide was developed. Based on this process, Ir(IV) can be extracted from a mixed chloride solution containing a large amount of Rh(III) and less amount of Ir(IV).

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Spectrofluorimetric determination of iridium(IV) traces using 4-pyridone derivatives

Cited by 6 publications

References 16 publications

Radical scavenging capacity, antibacterial activity, and quantum chemical aspects of the spectrophotometrically investigated iridium (III) complex with benzopyran derivative

Radical scavenging capacity, antibacterial activity, and quantum chemical aspects of the spectrophotometrically investigated iridium (III) complex with benzopyran derivative

A New Reagent for Spectrophotometric Determination of Ir(IV): 5-[2-(4-Hydroxyphenyl) hydrazineylidene]- 4-iminothiazolidin-2-one (HPIT)

Solvent Extraction of Iridium(IV) with the Petroleum Sulfoxide

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