On the determination of platinum group elements in environmental materials by inductively coupled plasma mass spectrometry and microwave digestion

Djingova, R.; Heidenreich, Heike; Kovacheva, Petya; Markert, Bernd

doi:10.1016/s0003-2670(03)00716-5

Cited by 103 publications

(49 citation statements)

References 33 publications

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“…With respect to osmium, there are also some contributions that describe the use of classical polarography, voltammetry or coulometry for such purposes. One of the very first reports is a work by Crowell et al focused on the polarographic reduction of the osmium tetroxide, OsO 4 , in highly alkaline media [6]. Similar studies with octavalent osmium have been described by Cover, Connery, and Meites [7 -9], who had experimented with a series of Os(VIII) compounds in various media, over the whole pH-range, in the presence of some inorganic and organic complex-forming substances.…”

Section: Introductionmentioning

confidence: 82%

“…It is evident that these results are somewhat lower compared to analyses of model solutions. The source for that might be a certain interference from foreign ions (e.g., HCrO 4 À specified in the list [24]) or due to some remaining traces of cyanide ions yet complexing the Os(IV) species [9 -11]. Nevertheless, again, for a method employing the ion-pairing based accumulation and capable of operating in difficult matrices, even recoveries of approximately 90% can be regarded to be still acceptable for analytical purposes.…”

Section: Analysis Of Model Solutions and Real Sample Of Industrial Wamentioning

confidence: 99%

“…For the determination of platinum metals, sophisticated procedures combined with modern spectral and optical techniques are usually selected (see, e.g., surveys in [2]), including osmium when the respective methods have employed AAS [3], ICP-MS [4], or NAA [5].…”

Section: Introductionmentioning

confidence: 99%

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A Study on Stripping Voltammetric Determination of Osmium(IV) at a Carbon Paste Electrode Modified In Situ with Cationic Surfactants

et al. 2006

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This article deals with the development of a method for the determination of osmium at a carbon paste electrode (CPE) modified with cationic surfactants of the quaternary ammonium salt type; namely, cetyltrimethylammonium bromide (CTAB) and 1-(ethoxycarbonyl)-pentadecyltrimethyl-ammonium bromide (Septonex); both being added in situ and serving for preconcentration of osmium via its hexachloroosmate(IV) anion. The proper electrochemical detection was performed by cathodic scanning in the differential pulse voltammetric mode. Optimization studies concerning important experimental parameters also included a specially performed potentiometric titration, helping to define the actual stoichiometry for the ion-pairing process, the main principle and driving force of the accumulation step. In a chloride/acetate buffer based supporting medium and with Septonex as the modifier of choice, the reduction signal for osmium was found to be proportional to the Os(IV) concentration in a range from 5 Â 10 À9 to 5 Â 10 À7 mol L À1 with a limit of detection close to 5 Â 10 À9 mol L À1 (with preconcentration for 60 s). The method capable to determine Os(IV) in the presence of both Pt(IV) and Ir(III) was tested on model solutions as well as with real sample of industrial waste water (spiked with the analyte); both yielding the recovery rates within 88 -99%.

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Section: Introductionmentioning

confidence: 82%

Section: Analysis Of Model Solutions and Real Sample Of Industrial Wamentioning

confidence: 99%

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A Study on Stripping Voltammetric Determination of Osmium(IV) at a Carbon Paste Electrode Modified In Situ with Cationic Surfactants

et al. 2006

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“…Mosses are often used as biotest samples for evaluation of the environmental impact of PGMs. Data on the content of various metals in mosses has been published: 6.4-27.4 ng/g Pt and 1.2-4.6 ng/g Rh in one study [191] and 30 ng/g Pt, 2.4 ng/g Pd, and 5.4 ng/g Rh in another [192]. ICP MS and AV offer the potential for direct detection of metals in solutions obtained after sample digestion.…”

Section: Plantsmentioning

confidence: 99%

Quantification of Noble Metals in Biological and Environmental Samples

Balcerzak

2016

Handbook of Trace Analysis

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“…30,35,37,44,45,132,135,138,[160][161][162][163][164] Analyses of the features of instrumental techniques show that the use of selective sorbents is preferable for the development of efficient determinations of noble metals. Complexing sorbents ensure the quantitative recovery of noble metals, and the concentrates obtained are free from most impurities, which allows one to enhance the reliability and sensitivity of noble metal detection.…”

Section: ·2 Inductively Coupled Plasma Atomic Emission Spectrometrymentioning

confidence: 99%

Trends in Sorption Preconcentration Combined with Noble Metal Determination

2007

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Nowadays much attention is being paid to the determination of trace amounts of noble metals in geological, industrial, biological and environmental samples. The most promising techniques, such as inductively coupled plasma atomic emission spectrometry (ICP-AES), inductively coupled plasma mass spectrometry (ICP-MS) and electrothermal atomic absorption spectrometry (ETAAS) are characterized by high sensitivity. However, the accurate determination of trace noble metals has been limited by numerous interferences generated from the presence of matrix elements. To decrease, or eliminate, these interferences, the sorption preconcentration of noble metals is often used prior to their instrumental detection. A great number of hyphenated methods of noble metal determination using sorption preconcentration have been developed. This review describes the basic types of available sorbents, preconcentration procedures and preparations of the sorbent to the subsequent determination of noble metals. The specific features of instrumental techniques and examples of ETAAS, FAAS, ICP-AES, ICP-MS determinations after the sorption preconcentration of noble metals are considered. The references cited here were selected mostly from the period 1996 -2006.

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On the determination of platinum group elements in environmental materials by inductively coupled plasma mass spectrometry and microwave digestion

Cited by 103 publications

References 33 publications

A Study on Stripping Voltammetric Determination of Osmium(IV) at a Carbon Paste Electrode Modified In Situ with Cationic Surfactants

A Study on Stripping Voltammetric Determination of Osmium(IV) at a Carbon Paste Electrode Modified In Situ with Cationic Surfactants

Quantification of Noble Metals in Biological and Environmental Samples

Trends in Sorption Preconcentration Combined with Noble Metal Determination

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