A survey of the determination of the platinum group elements

Kallmann, Silve

doi:10.1016/0039-9140(87)80222-9

Cited by 52 publications

(7 citation statements)

References 28 publications

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“…a detection limit (DL) of 10 pg mL"1. This DL is lower than those reported for other instrumental techniques such as visible absorption spectrometry, atomic absorption spectrometry, inductively coupled plasma atomic emission spectrometry, inductively coupled plasma mass spectrometry, ion chromatography, and CL methods (17)(18)(19)(20)(21)(22)(23).…”

Section: Introductionmentioning

confidence: 57%

Chemiluminescence from the reaction of chloroauric acid with luminol in reverse micelles

Imdadullah¹,

Fujiwara²,

Kumamaru³

1991

Anal. Chem.

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The chemiluminescence (CL) reaction of tetrachloroaurate-(III) with luminol In reversed micellar system of hexadecyltrlmethylammonlum chloride-water (buffered with sodium carbonate)-6:S (v/v) chloroform-cyclohexane was studied and applied to develop a new flow Injection procedure for the determination of gold at trace levels In chloroform.The behavior of the gold(III) complex was examined by Its spectral measurements In the near-UV and visible regions In dWferent media. All the optimization conditions for the method were determined by using a flow system, and the characteristics of the CL system In the reverse micelles were examined. The method Is simple and reproducible with a detection limit (DL) of 10 pg mL"1. The calibration graph was linear between 1 ng mL"1 and 1000 ng mL'1 along with a second straight Une from the DL up to 1 ng mL"1. The relative standard deviation was 3%.

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Section: Introductionmentioning

confidence: 57%

Chemiluminescence from the reaction of chloroauric acid with luminol in reverse micelles

Imdadullah¹,

Fujiwara²,

Kumamaru³

1991

Anal. Chem.

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“…59 The high resistance of ruthenium, rhodium, osmium and iridium to an attack by a mixture of acids, including aqua regia, limits the use of a direct wet digestion procedure to their quantitative transformation into soluble species. The metals can be transformed into solution by an aqua regia treatment when accompanying (at low % levels) platinum and paladium 60 or common metals 61 in alloys. Aqua regia is applied for the decomposition of various catalysts containing PGM.…”

Section: Wet Acid Treatmentmentioning

confidence: 99%

Sample Digestion Methods for the Determination of Traces of Precious Metals by Spectrometric Techniques

Balcerzak

2002

ANAL. SCI.

162

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Recent advances in digestion methods used in the analysis of precious metal samples by spectrometric techniques are reviewed. The applicability of a fire assay, a wet acid treatment, chlorination and alkaline oxidizing fusion to a quantitative recovery of metals from various materials is discussed. Data on the precious metal contents obtained by using particular digestion methods as well as UV-VIS spectrophotometry, atomic absorption spectrometry, atomic emission spectrometry and inductively coupled plasma mass spectrometry in the examination of various samples are tabulated.

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“…It usually dissolves in aqua regia when accompanies platinum in alloys (below 5% concentration levels). 9 The obtained solutions were evaporated almost to dryness to remove nitric acid that can interfere with quantitative conversion of platinum into the iodide complex. To ensure the complete separation of HNO3, additional 3-ml volume of hydrochloric acid was added to the solutions and the evaporation was repeated.…”

Section: Determination Of Platinum In Pt-ru Carbon Supported Catalystmentioning

confidence: 99%

Rapid Derivative Spectrophotometric Method for the Determination of Platinum in Pt-Ru/C Catalyst Using Iodide Media

Balcerzak

Kaczmarczyk

2001

ANAL. SCI.

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A rapid spectrophotometric method for the determination of platinum in 20% Pt-Ru (Pt:Ru (1:1)) carbon-supported catalyst has been developed. The samples of catalyst (0.85 -12.60 mg) have been digested 1) in aqua regia after preliminary separation of carbon by burning or 2) directly in aqua regia in the presence of carbon. The detection of platinum was carried out in the obtained solutions after conversion of the metal into the iodide complex. The interfering effect of ruthenium on the detection of platinum was eliminated by the use of derivative spectrophotometry. Platinum was selectively determined by numerical calculation of the 4th-order-derivative absorption spectrum of the mixture of iodide complexes of both metals.

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A survey of the determination of the platinum group elements

Cited by 52 publications

References 28 publications

Chemiluminescence from the reaction of chloroauric acid with luminol in reverse micelles

Chemiluminescence from the reaction of chloroauric acid with luminol in reverse micelles

Sample Digestion Methods for the Determination of Traces of Precious Metals by Spectrometric Techniques

Rapid Derivative Spectrophotometric Method for the Determination of Platinum in Pt-Ru/C Catalyst Using Iodide Media

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