Statistical treatment of ETA-AAS (electrothermal atomisation - atomic absorption spectrometry) solid sampling data of heterogeneous samples

Kurfürst, U.

doi:10.1351/pac199163091205

Cited by 44 publications

(8 citation statements)

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“…In this approach, a known quantity of SRM, of a similar matrix (i.e., U.S. Geological Survey Standard Sediment and Rocks MAG‐1, GRX‐1, ‐4, and ‐6), is suspended in a pH‐adjusted solution and then loaded onto the same filter type used for sample acquisition. However, at small masses, heterogeneity in reference materials decrease the precision of replicate analyses (Kurfurst 1991; Kurfurst et al 1993; Pauwels and Vandecasteele 1993). Additionally, many solid reference material certifications report a “minimum recommended mass” between 100 and 200 mg be used to ensure a homogenized sample.…”

Section: Materials and Proceduresmentioning

confidence: 99%

Energy dispersive X‐ray fluorescence methodology and analysis of suspended particulate matter in seawater for trace element compositions and an intercomparison with high‐resolution inductively coupled plasma‐mass spectrometry

Buck

Barrett

Morton

et al. 2021

Limnology & Ocean Methods

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A modification of energy dispersive X‐ray fluorescence (ED‐XRF) for analysis of trace element concentrations in suspended particulate matter (SPM) in seawater and intercomparison with high‐resolution inductively coupled plasma‐mass spectrometry (HR ICP‐MS) is presented. Approximately 250 SPM samples were collected on polycarbonate track‐etched filters in the Indian Ocean during the U.S. CLIVAR/CO2 Repeat Hydrography meridional section I09N cruise in 2007. Samples were first analyzed by ED‐XRF, a nondestructive technique, for Al, P, Ti, Mn, Fe, Ni, Cu, and Zn and subsequently digested and quantified by HR ICP‐MS, creating two blind, basin‐scale data sets used for a paired statistical comparison. Our results found (1) ED‐XRF analysis using thin‐film principles can quantify the elemental composition of SPM at nanomolar concentrations found in the open ocean; (2) there was excellent agreement between ED‐XRF and HR ICP‐MS analyses for Al, Fe, and Mn and good agreement for P and Ti; (3) analytical differences were the largest for Cu, Ni, and Zn; (4) HR ICP‐MS methods have lower detection limits for most elements when compared to the ED‐XRF; (5) ED‐XRF analysis has a closer agreement to reported values for the NIST SRM 2783 standard and lower relative standard deviations when compared to the HR ICP‐MS. We recommend continued refinement of nondestructive ED‐XRF methods as this would allow for the easy exchange of filtered samples between lab groups for intercalibration and intercomparison of basin‐scale hydrographic cruises and archival for future analysis.

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Section: Materials and Proceduresmentioning

confidence: 99%

Energy dispersive X‐ray fluorescence methodology and analysis of suspended particulate matter in seawater for trace element compositions and an intercomparison with high‐resolution inductively coupled plasma‐mass spectrometry

Buck

Barrett

Morton

et al. 2021

Limnology & Ocean Methods

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“…Esse parâmetro depende de fatores como a natureza do material, a densidade, a massa de amostra a ser utilizada e a concentração do elemento de interesse. Experiências têm mostrado que a heterogeneidade para pequenas massas de amostras é, geralmente, conseqüência da presença de partículas grandes "aglomeradas", as quais podem conter concentrações de elementos em níveis de traço muito maiores que aquelas encontradas em toda a amostra 37 . Uma maneira de contornar esse tipo de problema é reduzir o tamanho das partículas das amostras por meio de procedimentos de moagem, como já anteriormente mencionado.…”

Section: Figura 1 Número De Artigos Publicados Por Ano Referentes à unclassified

Análise direta de sólidos por espectrometria de absorção atômica com atomização em forno de grafite: uma revisão

Nomura¹,

Silva²,

Oliveira³

2008

Quím. Nova

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“…An analysis is typically completed within 30-60 min. In order to minimise the influence of possible outliers -e.g., due to the occurrence of so-called nuggets [19] -the use of the median instead of the average is often preferred [20].…”

Section: Calibrationmentioning

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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Statistical treatment of ETA-AAS (electrothermal atomisation - atomic absorption spectrometry) solid sampling data of heterogeneous samples

Abstract: Abstract

Cited by 44 publications

References 0 publications

Energy dispersive X‐ray fluorescence methodology and analysis of suspended particulate matter in seawater for trace element compositions and an intercomparison with high‐resolution inductively coupled plasma‐mass spectrometry

Energy dispersive X‐ray fluorescence methodology and analysis of suspended particulate matter in seawater for trace element compositions and an intercomparison with high‐resolution inductively coupled plasma‐mass spectrometry

Análise direta de sólidos por espectrometria de absorção atômica com atomização em forno de grafite: uma revisão

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

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