A close-up of three microwave plasma sources in view of improved element-specific detection in liquid chromatography

Broekaert, J. A. C.; Bings, Nicolas H.; Prokisch, C.; Seelig, M.

doi:10.1016/s0584-8547(97)00144-4

Cited by 15 publications

(4 citation statements)

References 28 publications

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“…In addition, the MPT can be sustained in a variety of supporting gases, including Ar, He, N 2 , Ne, and air . The MPT is similar to inductively coupled plasma (ICP), but the plasma is smaller, and the MPT was mainly used as an excitation source for atomic emission spectrometry, portable spectrometer, supercritical fluid chromatography, and liquid chromatography, for elemental analysis until the MPT temperature reported from some labs was placed below the ICP temperature. The plasma temperature defines the atomization efficiency for atomic spectroscopy, so the ICP‐MS is preferred over the MPT for atomic spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

Direct desorption/ionization of analytes by microwave plasma torch for ambient mass spectrometric analysis

et al. 2013

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Ambient ionization is the new revolution in mass spectrometry (MS). A microwave plasma produced by a microwave plasma torch (MPT) at atmospheric pressure was directly used for ambient mass spectrometric analysis. H3O(+) and NH4(+) and their water clusters from the background are formed and create protonated molecules and ammoniated molecules of the analytes. In the full-scan mass spectra, both the quasi-molecular ions of the analytes and their characteristic ionic fragments are obtained and provide evidence of the analyte. The successful detection of active compounds in both medicine and garlic proves that MPT has the efficient desorption/ionization capability to analyze solid samples. The obtained decay curve of nicotine in exhaled breath indicates that MPT-MS is a useful tool for monitoring gas samples in real time. These results showed that the MPT, with the advantages of stable plasma, minimal optimization, easy, solvent-free operation, and no pretreatment, is another potential technique for ambient MS.

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Section: Introductionmentioning

confidence: 99%

Direct desorption/ionization of analytes by microwave plasma torch for ambient mass spectrometric analysis

et al. 2013

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“…MPT offered a much better analytical performance for the introduction of aqueous aerosols. At the incipient stage, MPT were mainly used as the emission light source for atomic emission spectrometry (AES), portable spectrometer [ 127 , 128 ], supercritical fluid chromatography (SFC) [ 129 ], or liquid chromatography (LC) [ 130 ]. However, MPT processes relatively high ionization efficiency, although less than 100%, and it also plays an important role in massspectrometry.…”

Section: Mass Spectrometrymentioning

confidence: 99%

Contemporary Research Progress on the Detection of Polycyclic Aromatic Hydrocarbons

Zhang

Yuan

et al. 2022

IJERPH

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Polycyclic aromatic hydrocarbons (PAHs) are a class of the most common and widespread contaminants. The accumulation of PAHs has made a certain impact on the environment and is seriously threatening human health. Numerous general analytical methods suitable for PAHs were developed. With the development of economy, the environmental problems of PAHs in modern society are more extensive and prominent, and attract more attention from environmental scientists and analysts. Deeper understanding of the properties of PAHs depends on the advent of detection methods, which can also be more conducive to promoting the protection of the environment. Till now, more sensitive, more high-speed and more high-throughput analytical tools are being invented and have played important roles in the research of PAHs. In this short review article, we focused mainly on the contemporary analytical methods about PAHs. We started with a brief review on the hazards, migration, distribution and traditional analysis methods of PAHs in recent years, including liquid chromatography, gas chromatography, surface enhanced Raman spectroscopy and so on. We also presented the applications of the modern ambient mass spectrometry, especially microwave plasma torch mass spectrometry, in the detection of PAHs, as well as the far out novel results in our lab by using microwave plasma torch (MPT) mass spectrometry; for example, some new insights about Birch reduction, regular hydrogen addition and the robustness of molecular structure. These studies have demonstrated the versatility of MPT MS as a platform in the research of PAHs.

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“…As a novel kind of plasma generator by applying the commercial high‐frequency (2450 MHz, ~50 W) microwave field at atmospheric pressure, the MPT can produce a long stable flame‐like plasma, similar to ICP, and the plasma can also be sustained in a variety of supporting gases, including Ar, He, N 2 , Ne and air. Based on its multiple merits, for instance, small size, low power consumption, low cost, easy operation and high excitation efficiency, MPT has broad applications in the portable AES spectrometer, supercritical fluid chromatography (SFC), liquid chromatography (LC) as an excited light source for elemental analysis. Recently, the MPT has also been used as an ion source coupled with a variety of mass spectrometers and has been applied in the analysis of the nonmetal elements as well as the detection of halogenated hydrocarbons separated by a capillary gas chromatography .…”

Section: Introductionmentioning

confidence: 99%

Microwave plasma torch mass spectrometry for the direct detection of copper and molybdenum ions in aqueous liquids

et al. 2016

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Microwave plasma torch (MPT) is a simple and low power-consumption ambient ion source. And the MPT Mass spectra of many metal elements usually exhibit some novel features different from their inductively coupled plasma (ICP) mass spectra, which may be helpful for metal element analysis. Here, we presented the results about the MPT mass spectra of copper and molybdenum elements by a linear ion trap mass spectrometer (LTQ). The generated copper or molybdenum contained ions in plasma were characterized further in collision-induced dissociated (CID) experiments. These researches built a novel, direct and sensitive method for the direct analysis of trace levels of copper and molybdenum in aqueous liquids. Quantitative results showed that the limit of detection (LOD) by using MS(2) procedure was estimated to be 0.265 µg/l (ppb) for copper and 0.497 µg/l for molybdenum. The linear dynamics ranges cover at least 2 orders of magnitude and the analysis of a single aqueous sample can be completed in 5-6 min with a reasonable semi-quantitative sense. Two practical aqueous samples, milk and urine, were also analyzed qualitatively with reasonable recovery rates and RSD. These experimental data demonstrated that the MPT MS is able to turn into a promising and hopeful tool in field analysis of copper and molybdenum ions in water and some aqueous media, and can be applied in many fields, such as environmental controlling, hydrogeology, and water quality inspection. Moreover, MPT MS could also be used as the supplement of ICP-MS for the rapid and in-situ analysis of metal ions. Copyright © 2016 John Wiley & Sons, Ltd.

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A close-up of three microwave plasma sources in view of improved element-specific detection in liquid chromatography

Cited by 15 publications

References 28 publications

Direct desorption/ionization of analytes by microwave plasma torch for ambient mass spectrometric analysis

Direct desorption/ionization of analytes by microwave plasma torch for ambient mass spectrometric analysis

Contemporary Research Progress on the Detection of Polycyclic Aromatic Hydrocarbons

Microwave plasma torch mass spectrometry for the direct detection of copper and molybdenum ions in aqueous liquids

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