Study on microwave induced plasma atomic absorption spectrometry (MIP-AAS) for the determination of calcium in axial viewing mode

Duan, Yixiang; Huo, Mingyi; Liu, Jun; Jin, Qinhan

doi:10.1007/bf00323203

Cited by 10 publications

(3 citation statements)

References 21 publications

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“…A heated Ta filament was used for electrothermal vaporization of samples introduced to a low-power surface-wave MIP (surfatron), viewed in the axial position (343). This instrument was used for the determination of Ca (344).…”

Section: Other Techniquesmentioning

confidence: 99%

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

Jackson

Chen

1996

Anal. Chem.

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Section: Other Techniquesmentioning

confidence: 99%

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

Jackson

Chen

1996

Anal. Chem.

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“…Although plasma sources have been widely used in atomic spectrometry with AES and MS detection, the investigation into and application of plasma sources as atomic reservoirs for conventional absorption measurements are still limited due to the characteristics of the plasma sources − and the capabilities of conventional light sources. Recent advances in CRDS technology, in conjunction with renewed interests in atomic absorption measurements with plasma sources for atomization, have brought about plasma-CRDS for elemental and isotopic measurements. − Inductively coupled plasmas (ICPs), − microwave-induced plasmas (MIPs), − and cascaded arc plasmas have been explored for elemental and isotopic detection as well as for plasma diagnostics.…”

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confidence: 99%

Development of Alternative Plasma Sources for Cavity Ring-Down Measurements of Mercury

et al. 2005

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We have been exploring innovative technologies for elemental and hyperfine structure measurements using cavity ring-down spectroscopy (CRDS) combined with various plasma sources. A laboratory CRDS system utilizing a tunable dye laser is employed in this work to demonstrate the feasibility of the technology. An in-house fabricated sampling system is used to generate aerosols from solution samples and introduce the aerosols into the plasma source. The ring-down signals are monitored using a photomultiplier tube and recorded using a digital oscilloscope interfaced to a computer. Several microwave plasma discharge devices are tested for mercury CRDS measurement. Various discharge tubes have been designed and tested to reduce background interference and increase the sample path length while still controlling turbulence generated from the plasma gas flow. Significant background reduction has been achieved with the implementation of the newly designed tube-shaped plasma devices, which has resulted in a detection limit of 0.4 ng/mL for mercury with the plasma source CRDS. The calibration curves obtained in this work readily show that linearity over 2 orders of magnitude can be obtained with plasma-CRDS for mercury detection. In this work, the hyperfine structure of mercury at the experimental plasma temperatures is clearly identified. We expect that plasma source cavity ring-down spectroscopy will provide enhanced capabilities for elemental and isotopic measurements.

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“…In addition, microwave plasmas can be sustained at fairly low power and low gas flow rate, making them a desirable source for absorption measurement . So far, there have been a fair number of publications reporting the use of microwave plasma sources as atomization cells for conventional AAS measurements with hollow cathode lamps. − Additional efforts to improve sensitivity include designing high-efficiency desolvation devices to remove water vapor loading, designing various plasma discharges for better absorption measurement, adapting different sampling devices, and regulating the plasma gas flow system. With conventional lamps as a light source, MIP-AAS yields about 2−3 orders of magnitude lower detection limits than similar ICP-AAS experiments .…”

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confidence: 99%

Exploration of Microwave Plasma Source Cavity Ring-Down Spectroscopy for Elemental Measurements

2003

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We are exploring sensitive techniques for elemental measurements using cavity ring-down spectroscopy (CRDS) combined with a compact microwave plasma source as an atomic absorption cell. The research work marries the high sensitivity of CRDS with a low-power microwave plasma source to develop a new instrument that yields high sensitivity and capability for elemental measurements. CRDS can provide orders of magnitude improvement in sensitivity over conventional absorption techniques. Additional benefit is gained from a compact microwave plasma source that possesses the advantages of low power and low-plasma gas flow rate, which are of benefit for atomic absorption measurements. A laboratory CRDS system consisting of a tunable dye laser is used in this work for developing a scientific base and demonstrating the feasibility of the technique. A laboratory-designed and -built sampling system for solution sample introduction is used for testing. The ring-down signals are monitored using a photomultiplier tube and recorded using a digital oscilloscope interfaced to a computer. Lead is chosen as a typical element for the system optimization and characterization. The effects of baseline noise from the plasma source are reported. A detection limit of 0.8 ppb (10(-)(10)) is obtained with such a device.

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Study on microwave induced plasma atomic absorption spectrometry (MIP-AAS) for the determination of calcium in axial viewing mode

Cited by 10 publications

References 21 publications

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

Development of Alternative Plasma Sources for Cavity Ring-Down Measurements of Mercury

Exploration of Microwave Plasma Source Cavity Ring-Down Spectroscopy for Elemental Measurements

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