Analytical Atomic Spectrometry with Flames and Plasmas

Broekaert, J. A. C.

doi:10.1002/3527600620

Cited by 58 publications

(29 citation statements)

References 109 publications

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“…The Okamoto-cavity can work at high powers up to 1.5 kW, to make this plasma source highly tolerant to loading of wet aerosols not only in an excitation source in OES 5) but also in an ionization source for mass spectrometry. 6) Furthermore, the Okamoto-cavity MIP has several features beyond a conventional ICP as follows: (1) it has lower background emission intensity compared to the Ar-ICP being suitable for the excitation source in OES, (2) it can be sustained with various gases, such as nitrogen, nitrogen-oxygen, and helium, 7,8) (3) it can be directly loaded with organic solvents when using nitrogen-oxygen mixed gas. [8][9][10][11] Concerning the feature (2), the Okamoto-cavity MIP can be operated by using an air compressor 12) and thus works under the conditions without any cylinder gas.…”

Section: Introductionmentioning

confidence: 99%

Emission Spectrometric Analysis Using an Okamoto-cavity Microwave-induced Plasma with Nitrogen-Oxygen Mixed Gas

2013

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Microwave-induced plasma optical emission spectrometry (MIP-OES) using Okamoto-cavity has a unique feature being suitable for in-situ analysis in steel-making industry. The Okamoto-cavity MIP can be directly loaded with organic solvents including sample solution as well as fine particles of a solid sample in the nitrogen-oxygen mixed gas plasma; furthermore, their emission intensities are much elevated by adding oxygen of up to 10% to the nitrogen matrix gas, thus contributing to better sensitivity in the MIP-OES. The reason for the intensity enhancement was investigated with a spectroscopic method that the spatial distribution of the emission intensity from the plasma was estimated with a two-dimensionally imaging spectrograph. Emission lines of chromium, which was the most important alloying element in steel materials, as well as band heads of nitrogen molecule were observed, indicating that the emission intensity of atomic chromium lines was drastically elevated whereas the intensities of ionic chromium lines and the nitrogen band heads were commonly reduced when oxygen gas was added to the nitrogen plasma. This result implies that the ionization of chromium, which dominantly occurs through collisions with nitrogen excited species, can be suppressed because the nitrogen excited species would be consumed through collisions with oxygen molecules to cause their dissociation. Optimization of the measuring parameters in the Okamoto-cavity MIP-OES was conducted to determine chromium contents with good precision, and finally the analytical performance in the MIP was compared with that in a conventional ICP-OES.

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Section: Introductionmentioning

confidence: 99%

Emission Spectrometric Analysis Using an Okamoto-cavity Microwave-induced Plasma with Nitrogen-Oxygen Mixed Gas

2013

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“…Analyses were made at the Faculty of Agriculture and Food Sciences, University in Sarajevo. Concentrations were determined using a calibration curie (Harvey 2000, Broekaert 2002).…”

Section: Discussionmentioning

confidence: 99%

Deposition of metals in glacial lake sediment

Jurković

Habul

Dörfler

et al. 2018

pjss

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The aim of this research was to find the relationship between metals content and age of the sediment and to estimate the contamination level. For the research of sediment, samples were taken from the glacial Lake Prokosko. Concentrations of eight elements (Ca, Mg, Fe, Cd, Pb, Zn, Cu and Mn) were determined. The age was determined with usage of C 14. For statistical evaluation of the results, we used basic statistical tools, correlation, and PCA. The results showed that all of investigated metals have natural origin. Sediment core from this research was around 18,000 years old and the results revealed characteristics of metals deposition in the process of sedimentation. Concentrations of metals were compared with age (depth) of sediment. Maximal concentrations for iron, calcium, magnesium and manganese are found in the period of Allerӧd oscilation. Differences in Mn/Fe ratio and organic matter content are showing changes through history. These results show metal deposition characteristics in different climate periods, and these characteristics could be used as another proof of climate change.

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“…Picrates absorbencies were measured with Philips PU 8620 Spectrophotometer. Concentrations of cations were determined by atomic absorption AA13 on Varian AA 400 Spectrophotometer and the conductimeter used was a Tacussel CD6 with GMO1/G electrode.…”

Section: Methodsmentioning

confidence: 99%

Transport abilities of new synthesised membrane materials incorporating tetrapyrazolic tripods

Malek

Radi

2008

J of Applied Polymer Sci

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The synthesis of new membrane materials was carried out by photopolymerisation of formulation that contain the active tetrapyrazolic tripods monomers spread on a polyacrylonitrile support. The obtained membrane films were applied for their facilitated transport and extraction power towards Cd(II), Pb(II), and Hg(II). We have determined both the diffusion flux F of different cations and the selectivity S of the prepared membranes towards each cations.

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Analytical Atomic Spectrometry with Flames and Plasmas

Cited by 58 publications

References 109 publications

Emission Spectrometric Analysis Using an Okamoto-cavity Microwave-induced Plasma with Nitrogen-Oxygen Mixed Gas

Emission Spectrometric Analysis Using an Okamoto-cavity Microwave-induced Plasma with Nitrogen-Oxygen Mixed Gas

Deposition of metals in glacial lake sediment

Transport abilities of new synthesised membrane materials incorporating tetrapyrazolic tripods

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