An overview of electrothermal excitation sources for atomic emission spectrometry

Rust, Jennifer A.; Donati, George L.; Afonso, Mirela T.; Nóbrega, Joaquim A.; Jones, Bradley T.

doi:10.1016/j.sab.2009.02.003

Cited by 20 publications

(17 citation statements)

References 59 publications

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“…The combination of LPME techniques with tungsten coil-based devices has been mostly restricted to WCAAS measurements, but this synergistic association remains unexplored for WCAES. In comparison to WCAAS, some favourable characteristics are associated with WCAES, especially the multi-element capacity and portability [20].…”

Section: Wcaesmentioning

confidence: 99%

Tungsten coil atomic emission spectrometry combined with dispersive liquid–liquid microextraction: A synergistic association for chromium determination in water samples

Vidal

Silva

Canals

et al. 2016

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A novel and environmentally friendly analytical method is reported for total chromium determination and chromium speciation in water samples, whereby tungsten coil atomic emission spectrometry (WCAES) is combined with in situ ionic liquid formation dispersive liquid-liquid microextraction (in situ IL-DLLME).A two stage multivariate optimization approach has been developed employing a Plackett-Burman design for screening and selection of the significant factor involved in the in situ IL-DLLME procedure, which was later optimized by means were 3 and 10 µg L -1 , respectively. This is a 233-fold improvement when 2 compared with chromium determination by WCAES without using preconcentration. The repeatability of the proposed method was evaluated at two different spiking levels (10 and 50 µg L -1 ) obtaining coefficients of variation of 11.4 and 3.6% (n=3), respectively. A certified reference material (SRM-1643e NIST) was analysed in order to determine the accuracy of the method for total chromium determination and 112.3% and 2.5 µg L -1 were the recovery (trueness) and standard deviation values, respectively. Tap, bottled mineral and natural mineral waters were analysed at 60 µg L -1 spiking level of total Cr content at two Cr(VI)/Cr(III) ratios, and relative recovery values were ranged between 88 and 112% showing that the matrix has a negligible effect. To our knowledge, this is the first time that combines in situ IL-DLLME and WCAES.

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Section: Wcaesmentioning

confidence: 99%

Tungsten coil atomic emission spectrometry combined with dispersive liquid–liquid microextraction: A synergistic association for chromium determination in water samples

Vidal

Silva

Canals

et al. 2016

Talanta

Self Cite

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“…As medições de emissão também podem ser realizadas usando um tubo de grafite como atomizador, mas essa estratégia não é tão atrativa devido à forte emissão gerada pelo tubo incandescente sob altas temperaturas, 15 também denominada emissão de corpo negro. A uma dada temperatura, corpos emitem espectros idênticos independente de sua composição, e a intensidade de radiação foi descrita como função da frequência à temperatura constante pelas leis de Wien e Rayleigh-Jeans.…”

Section: Figura 2 Representação De Sinais Analíticos Medidos Em Situunclassified

Sinais de fundo em análise instrumental: uma discussão essencial em cursos de graduação

Amais¹,

Rocha²,

Nóbrega³

2016

Quim. Nova

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“…Furnace atomisation plasma emission spectrometry (FAPES): this consists of a capacitively coupled radiofrequency helium plasma formed inside a graphite tube which contains an axial powered electrode. 9 This miniplasma has been scarcely used in analytical spectrometry, probably because of the lack of information about its capabilities and applications.…”

Section: Atomic Emission Spectrometry: Instrumentationmentioning

confidence: 99%

An Overview of Atomic Spectrometric Techniques

Sanz‐Medel

Pereiro

Costa‐Fernández

2013

Basic Chemometric Techniques in Atomic Spectroscopy

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The principles, instrumentation, and analytical performance of most common quantitative atomic techniques based on optical spectrometry (absorption, emission or fluorescence) and mass spectrometry for the analysis of liquid samples and for direct solid analysis are outlined. Emphasis is given to conceptual explanations aiming to stress the advantages and disadvantages of each technique, the increase in the complexity of the data they generate and how this can be addressed. Powerful quantification strategies such as isotope dilution analysis are also discussed. Moreover, considering that on‐line liquid sample introduction systems such as flow injection manifolds and chromatography have become commonplace in most laboratories, a section is dedicated to the combination of flow systems with spectrometric detection techniques; in this context, special attention is paid to modern issues related to detection of fast transient signals. Finally, a brief introduction to quality assurance control guidelines, instrument maintenance and troubleshooting is provided.

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An overview of electrothermal excitation sources for atomic emission spectrometry

Cited by 20 publications

References 59 publications

Tungsten coil atomic emission spectrometry combined with dispersive liquid–liquid microextraction: A synergistic association for chromium determination in water samples

Tungsten coil atomic emission spectrometry combined with dispersive liquid–liquid microextraction: A synergistic association for chromium determination in water samples

Sinais de fundo em análise instrumental: uma discussão essencial em cursos de graduação

An Overview of Atomic Spectrometric Techniques

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