Design and modelling of a modified 2.45 GHz coaxial plasma torch for atomic spectrometry

Bilgic, Attila; Prokisch, C.; Broekaert, J. A. C.; Voges, E.

doi:10.1016/s0584-8547(97)00126-2

Cited by 39 publications

(28 citation statements)

References 7 publications

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“…The plasma is toroidal in form, so sample aerosols or vapours can be fed into the plasma with high efficiency. When the depth of the cavity is properly selected there is no need to retune the plasma after ignition [24] and in atomic emission spectrometry detection limits for volatile-hydride-forming elements were at the 5-10 ng mL -1 level, only half an order of magnitude higher than in ICP-OES. The best limits of detection were obtained with a helium discharge, although at the expense of operating stability [25].…”

Section: Microwave Plasmasmentioning

confidence: 99%

The development of microplasmas for spectrochemical analysis

Broekaert

2002

Anal Bioanal Chem

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Miniaturized microwave, high-frequency, and dc-powered microplasmas are discussed, with emphasis on the state-of-the-art and development trends. Specific atomic emission sources discussed include the microstrip microwave plasma operated in argon and helium at ca 10-30 W and below 1 L min(-1) gas at atmospheric pressure, the capacitively coupled microplasma, operated at 13.56 MHz, 5-25 W, and 17-150 mL min(-1) helium, the miniaturized inductively coupled plasma operated at several watts and reduced pressure, and dc glow-discharge plasmas on a chip, including a barrier-layer discharge as atom reservoir for atomic absorption spectrometry. Diagnostics for these sources are discussed and some of their figures of merit are compared with those of conventional sources. Current possibilities for introduction of gaseous samples are reported and scope for further development and outlook are both discussed.

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Section: Microwave Plasmasmentioning

confidence: 99%

The development of microplasmas for spectrochemical analysis

Broekaert

2002

Anal Bioanal Chem

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“…Its length is selected so that fluctuations in the plasma load, e.g., when igniting or changing the sample flows into the plasma, have a lowest possible influence on the resonance conditions. The device, of which the novel aspects are described in [51], could be operated for hours without any deterioration of the microstrips or of the channel in the quartz. It could be used with 0.5 l/min of argon and a power of 15 W in conjunction with the mercury cold vapor technique for the determination of mercury detection limits were observed to be 50 pg/ml and had excellent short-and long-term precision [52].…”

Section: Microwave Induced Plasmas 900mhz-245 Ghzmentioning

confidence: 99%

Analytical Detectors Based on Microplasma Spectrometry

Miclea

Franzke

2007

Plasma Chem Plasma Process

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Miniaturizing all dimensions of apparatus, such as electronics and computers, is the current trend followed by scientists in various fields. The idea of Lab-on-a-Chip has significantly expanded and found its broad applications in analytical chemistry. Microplasmas can act as a sample excitation source and are the miniaturized versions of full-sized plasmas. These can be created in various forms, such as direct current, microwave induced, capacitively coupled and inductively coupled plasmas. Scaling down the size would reduce the amount of gases, liquids and consumables required, as well as the sample analysis time, which in turn would decrease the operating costs. Therefore, several research groups are involved in the development of microplasmas for utilisation in analytical instruments.

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“…A relatively new type of MIP, the microwave plasma torch (MPT), was described by Jin et al [135,146,147] for use in AES and MS, and has subsequently been improved upon by Pack and Hieftje [148] and Bilgic et al [149]. The MPT offers several advantages over the conventional Beenakker (TEM 010 ) cavity.…”

Section: Microwave-induced Plasma Sourcesmentioning

confidence: 99%

Plasma-source mass spectrometry for speciation analysis: state-of-the-art

Ray¹,

Andrade²,

Gamez³

et al. 2004

Journal of Chromatography A

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Current and emerging capabilities of plasma-source mass spectrometry (PS-MS) as it is employed for elemental speciation analysis are reviewed. Fundamental concepts and their advantageous aspects, experimental conditions, and analytical performance are described and illustrated by recent examples from the literature. Novel instrumentation, techniques, and strategies for inductively-coupled plasma mass spectrometry (ICP-MS), microwave-induced plasma (MIP) mass spectrometry, glow-discharge (GD) mass spectrometry, and electrospray ionization (ESI), among others, are described. The use of ionization sources that provide tunable ionization, others that can be modulated between different sets of operating conditions, and others used in parallel is also examined.

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Design and modelling of a modified 2.45 GHz coaxial plasma torch for atomic spectrometry

Cited by 39 publications

References 7 publications

The development of microplasmas for spectrochemical analysis

The development of microplasmas for spectrochemical analysis

Analytical Detectors Based on Microplasma Spectrometry

Plasma-source mass spectrometry for speciation analysis: state-of-the-art

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