Determination of bromide by low power surfatron microwave induced plasma after bromine continuous generation

Calzada, M. D.; Quintero, M.C.; Gamero, A; Cotrino, José; Uría, José Enrique Sánchez; Sanz‐Medel, Alfredo

doi:10.1016/0039-9140(92)80146-5

Cited by 36 publications

(10 citation statements)

References 10 publications

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“…This fact meant that the excitation of the samples was more effective at the maximum values of these parameters. Calzada et al 4,5 have done some research on the analytical determination of chloride, bromide and iodide for sample introduction into the plasma beginning with chlorine, bromine and iodine continuous generation. They found that the emission intensity of the halogen lines achieved a value almost constant at microwave power values from 100 W. In both references 4,5 a decreasing emission intensity of the halogen lines was also observed with an increase in the plasma gas flow.…”

Section: Influence Of the Equilibrium State In The Excitation Of Tmentioning

confidence: 99%

Influence of the thermodynamic equilibrium state in the excitation of samples by a plasma at atmospheric pressure

Calzada

Garcı́a

Luque

et al. 2002

Journal of Applied Physics

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Section: Influence Of the Equilibrium State In The Excitation Of Tmentioning

confidence: 99%

Influence of the thermodynamic equilibrium state in the excitation of samples by a plasma at atmospheric pressure

Calzada

Garcı́a

Luque

et al. 2002

Journal of Applied Physics

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show abstract

“…Current literature shows that surface-wave sustained discharges (SWDs) can advantageously be used as sources of excitation in mass spectrometry and atomic emission spectrometry to determine the composition of analytical samples [1][2]. In particular, SWDs are most advantageous than Inductively Coupled Plasmas (ICPs) for the excitation of halogens and other nonmetals that are not readily accessible to ICP detection with the adequate sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Role of dissociative recombination in the excitation kinetics of an argon microwave plasma at atmospheric pressure

Sáinz

Margot

Garcı́a

et al. 2005

Journal of Applied Physics

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A collisional radiative model was developed in order to investigate the influence of dissociative recombination on the Saha–Boltzmann plasma equilibrium. As the dissociative recombination products are not well known, their relative importance was tested through comparison with the distribution of line intensities obtained in a microwave argon discharge produced at atmospheric pressure by a surface wave. It was found that the main dissociation products are the ground state and the 4s levels, the 5p and upper levels playing a negligible role. Because the higher levels are only weakly affected by dissociative recombination, they remain in partial local thermodynamic equilibrium. Therefore, the excitation temperature determined from these levels adequately describes the electron temperature. The model well reproduces experimental measurements of excitation temperature, rotational temperature, electron density, and absolute populations of the excited levels.

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“…1 In the last ten years, research carried out on MIPs has shown that these discharges have several advantages as excitation sources in analytical spectrometry. [2][3][4][5][6] A great flexibility, stability, and reproducibility, a wide range of operating conditions, and an efficient excitation of the halogens and other nonmetals with an adequate sensitivity are some of the most outstanding features of these plasmas. Also, recently, MIPs have begun to be employed in the destruction of contaminant compounds 7 and in the purification of the noble gases.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Characterization of Two Different Microwave (2.45 GHz) Induced Argon Plasmas at Atmospheric Pressure

et al. 2005

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A surface-wave-sustained discharge created by using a surfatron device in a tube open to the atmosphere can be used to maintain a microwave (2.45 GHz) plasma at atmospheric pressure at powers of less than 300 W. The TIA (Torche a Injection Axiale) is a device also producing a plasma that, moreover, permits us to work at high power (higher than 200 W and up to 1000 W). A study of the departure from the thermodynamic equilibrium existing in the argon plasmas created by both devices has been done by using optical emission spectroscopy techniques in order to characterize them and to evaluate their possible advantages when they are used for applied purposes.

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Determination of bromide by low power surfatron microwave induced plasma after bromine continuous generation

Cited by 36 publications

References 10 publications

Influence of the thermodynamic equilibrium state in the excitation of samples by a plasma at atmospheric pressure

Influence of the thermodynamic equilibrium state in the excitation of samples by a plasma at atmospheric pressure

Role of dissociative recombination in the excitation kinetics of an argon microwave plasma at atmospheric pressure

Spectroscopic Characterization of Two Different Microwave (2.45 GHz) Induced Argon Plasmas at Atmospheric Pressure

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