Physical basis of atomic absorption spectrometry.  II.  Influence of temperature gradients on spatial distribution of neutral atoms in the long pathlength cell

Ando, Atsushi; Fuwa, Keiichirō; Vallée, Bert L.

doi:10.1021/ac60290a014

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1972

1998

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Cited by 21 publications

(2 citation statements)

References 20 publications

(17 reference statements)

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“…From the linear velocity of carrier in the discharge tube of 20 cm/ms at 3.8 Torr and 23 °C, the half-lives of the neutral cadmium and iron atoms, for example, can be calculated to be 0.6 and 0.05 ms, respectively. The half-lives of neutral atoms decrease in the order Cd > Zn > Mg > Co > Cu > Fe, quite similar to those observed in the long pathlength cell employed for flame atomic absorption (9).…”

Section: Resultssupporting

confidence: 69%

Interelement effects and a possible excitation mechanism in a low-pressure microwave induced helium plasma

Kawaguchi¹,

Atsuya²,

Vallée³

1977

Anal. Chem.

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Section: Resultssupporting

confidence: 69%

Interelement effects and a possible excitation mechanism in a low-pressure microwave induced helium plasma

Kawaguchi¹,

Atsuya²,

Vallée³

1977

Anal. Chem.

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“…Source radiation from a hollow cathode lamp (HCL) passed through the absorption cell and then through focusing optics onto a spectrograph. Compared to conventional flame AAS, they were able to increase the sensitivity for some elements by about 2 orders of magnitude (2,3). Other work using this long * To whom correspondence should be sent.…”

Section: Introductionmentioning

confidence: 99%

Long path atomic/ionic absorption spectrometry in an inductively coupled plasma

Mignardi¹,

Smith²,

Winefordner³

1990

Anal. Chem.

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A novel approach was taken to increase the atomic/ionic absorption path length in an inductively coupled plasma (ICP) by using a water-cooled quartz "T-shaped" bonnet. Atomic and ionic absorption spectrometry was performed utilizing a continuum source and line sources. Absorption spectra of synthetic multielement solutions were collected with a photodiode array. Sample introduction into the ICP was accomplished with an ultrasonic nebulizer. To prevent the bonnet from cracking, low radio frequency powers were utilized (i.e., 400-600 W). Plasma diagnostics were performed to study the plasma temperature and electron number density within the "T-shaped" bonnet. Analytical figures of merit were found to be better than those obtained from previous work attempted with inductively coupled plasma atomic absorption spectroscopy and approaching that of flame atomic absorption spectroscopy.

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1998

Atomic Absorption Spectrometry

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Physical basis of atomic absorption spectrometry. II. Influence of temperature gradients on spatial distribution of neutral atoms in the long pathlength cell

Cited by 21 publications

References 20 publications

Interelement effects and a possible excitation mechanism in a low-pressure microwave induced helium plasma

Interelement effects and a possible excitation mechanism in a low-pressure microwave induced helium plasma

Long path atomic/ionic absorption spectrometry in an inductively coupled plasma

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