Solid sampling in graphite furnace atomic-absorption spectrometry using the cup-in-tube technique

Völlkopf, U.; Grobenski, Z.; Tamm, Rolf; Welz, Bernhard

doi:10.1039/an9851000573

Cited by 81 publications

(21 citation statements)

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“…The methods reported for cesium ion microdetermination in aqueous and nonaqueous solutions include spectrophotometric [55], atomic absorption [56,57], radio-analysis [58] and potentiometric methods [59].…”

Section: B-microdetermination Of Cesiummentioning

confidence: 99%

New trends in the chemistry of condensed heteromacrocycles part B: Macrocyclic formazans

Ibrahim¹,

Abbas²,

Elwahy³

2004

Journal of Heterocyclic Chem

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Section: B-microdetermination Of Cesiummentioning

confidence: 99%

New trends in the chemistry of condensed heteromacrocycles part B: Macrocyclic formazans

Ibrahim¹,

Abbas²,

Elwahy³

2004

Journal of Heterocyclic Chem

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“…Pyrolytic graphite-coated tubes and cups (cup-in-tube technique for solid sampling [11]) were used throughout. Both the left-and right-hand contact cylinder were modified (a cut-out was made) to permit convenient insertion and removal of the cup.…”

Section: Instrumentationmentioning

confidence: 99%

Electrothermal vaporisation ICP-mass spectrometry (ETV-ICP-MS) for the determination and speciation of trace elements in solid samples – A review of real-life applications from the author's lab

2002

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The use of electrothermal vaporisation (ETV) from a graphite furnace as a means of sample introduction in inductively coupled plasma mass spectrometry (ICP-MS) permits the direct analysis of solid samples. A multi-step furnace temperature programme is used to separate the vaporisation of the target element(s) and of the matrix components from one another. Sometimes, a chemical modifier is used to enable a higher thermal pre-treatment temperature, by avoiding premature analyte losses (stabilisation) or promoting the selective volatilisation of matrix components. In almost all instances, accurate results can be obtained via external calibration or single standard addition using an aqueous standard solution. Absolute limits of detection are typically ~1 pg, which corresponds to 1 ng/g for a typical sample mass of 1 mg. Real-life applications carried out in the author's lab are used to illustrate the utility of this approach. These applications aim at trace element determination in industrial and environmental materials. The industrial materials analysed include different types of plastics - Carilon, polyethylene, poly(ethyleneterephtalate) and polyamide - and photo- and thermographic materials. As samples from environmental origin, plant material, animal tissue and sediments were investigated. Some applications aimed at a multi-element determination, while in other, the content of a single, but often challenging, element (e.g., Si or S) had to be measured. ETV-ICP-MS was also used in elemental speciation studies. Separation of Se-containing proteins was accomplished using polyacrylamide gel electrophoresis (PAGE). Subsequent quantification of the Se content in the protein spots was carried out using ETV-ICP-MS. As the volatilisation of methylmercury and inorganic mercury could be separated from one another with respect to time, no chromatographic or electrophoretic separation procedure was required, but ETV-ICP-MS as such sufficed for Hg speciation in fish tissue.

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“…Under optimal conditions day-to-day precision is around, sometimes even below, 2%. In FAAS, detection limits are at a level of 1 -100 ng mL-' (Welz, 1985). These can be improved by using slotted-tube atomic trap techniques (Brown and , and injection techniques for reducing the volumes required (Berndt and Jackwerth, 1975).…”

Section: Flame Atomic Absorption Spectrometry (Faas)mentioning

confidence: 99%

Analytical Techniques for Plant Analysis

Farago

Mehra

1994

Plants and the Chemical Elements

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Solid sampling in graphite furnace atomic-absorption spectrometry using the cup-in-tube technique

Cited by 81 publications

References 0 publications

New trends in the chemistry of condensed heteromacrocycles part B: Macrocyclic formazans

New trends in the chemistry of condensed heteromacrocycles part B: Macrocyclic formazans

Electrothermal vaporisation ICP-mass spectrometry (ETV-ICP-MS) for the determination and speciation of trace elements in solid samples – A review of real-life applications from the author's lab

Analytical Techniques for Plant Analysis

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