Sequential spectrophotometric determination of rhodium and iridium with 1,5-diphenylcarbazide

Brajter, Krystyna; Kozicka, Urszula

doi:10.1016/s0003-2670(00)85567-1

Cited by 7 publications

(2 citation statements)

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“…Some methods are time-consuming because reactions develop at higher temperature [35,36,38] and are not selective in the presence of rhodium(III), which is generally found to be associated with iridium [22,35,38]. Compared with other spectrophotometric methods, the present approach is considerably less complicated, because the reaction takes place at room temperature.…”

Section: Comparison Of the Developed Methods With Existing Methodsmentioning

confidence: 98%

“…Iridium can be determined spectrophotometrically at trace concentrations with a variety of reagents (Table 1) [21,22,[35][36][37][38][39][40][41]. Some methods are time-consuming because reactions develop at higher temperature [35,36,38] and are not selective in the presence of rhodium(III), which is generally found to be associated with iridium [22,35,38].…”

Section: Comparison Of the Developed Methods With Existing Methodsmentioning

confidence: 99%

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Spectrophotometric determination of iridium after complexation and membrane filtration

Amin

Zaafarany

2015

Analytical Chemistry Research

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a b s t r a c tA simple, ultra sensitive and selective method for the spectrophotometric determination of Ir 3+ in various synthetic and environmental samples was reported. The analyte ions were collected on a membrane filter in the form of their red complex with 5-(2-benzothiazolyl-azo)8-hydroxy-quinoline (BTAHQ), and the absorption spectra of the colored membrane filters were acquired. Effects of pH value, sample volume, and amount of BTAHQ were examined in order to optimize sensitivity. The interference by common other ions was eliminated using appropriate masking agents. The absorbance is linearly related to the concentration of Ir 3+ in the ranges from 0.1 to 0.8 lg/L, and from 1.0 to 7.0 lg/L, respectively, the correlation coefficients (R 2 ) being 0.9996 and 0.9994. The molar absorptivities were calculated to be 4.81 Â 10 5 and 4.26 Â 10 7 L mol À1 cm À1 at 563 nm, whereas Sandell sensitivity was found as 0.391 and 0.004 ng cm À2 , respectively. The novelty and advantages of the proposed method is the highly sensitivity of the proposed method compared with all previously cited methods for iridium determination. Under the optimal conditions, the detection limit is 0.03 lg/L. The recoveries in case of spiked samples are between 98.7% and 101.5%, and the relative standard deviations range from 1.21% to 1.75%. Ó 2015 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/3.0/).

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Section: Comparison Of the Developed Methods With Existing Methodsmentioning

confidence: 98%

Section: Comparison Of the Developed Methods With Existing Methodsmentioning

confidence: 99%

Spectrophotometric determination of iridium after complexation and membrane filtration

Amin

Zaafarany

2015

Analytical Chemistry Research

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Extraction spectrophotometric determination of rhodium(III) with o-methylphenyl thiourea

Shelar

Kuchekar

Han

2015

Journal of Saudi Chemical Society

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

Drušković

Vojković

Miko

2004

Talanta

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Sequential spectrophotometric determination of rhodium and iridium with 1,5-diphenylcarbazide

Cited by 7 publications

References 5 publications

Spectrophotometric determination of iridium after complexation and membrane filtration

Spectrophotometric determination of iridium after complexation and membrane filtration

Extraction spectrophotometric determination of rhodium(III) with o-methylphenyl thiourea

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

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