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- E-ISSN 2288-8985
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- P-ISSN1225-0163
- E-ISSN2288-8985
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Fundamental Studies of Gas-jet Assisted Radio Frequency Glow Discharge Atomic Absorption Spectrometry
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1995, v.8 no.1, pp.69-77
Choi,
S., &
Kim,
H.
(1995). Fundamental Studies of Gas-jet Assisted Radio Frequency Glow Discharge Atomic Absorption Spectrometry. Analytical Science and Technology, 8(1), 69-77.
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Abstract
The instrumentation and operating characteristics of a gas-jet assisted radio frequency glow discharge atomic absorption spectrometry(RF-GDAAS) are studied. The roles of discharge power, pressure as well as gas flow rate on the sample loss rate and absorbance are described in this paper. Results show that the optimum discharge conditions depend on pressure and discharge power as well as on the gas flow rate. The gas flow rate plays as an important parameter in RF-GDAAS. Absorbance increases as the gas flow rate increase up to 600ml/min., and the optimum absorbance is obtained at the pressure of 3 mbar. The absorbance increases when the discharge power increases as expected, however, the instability of the system due to the heat might be the trade off factor. The linear calibration curves of Ni and Cr in stainless steel(BAS 461-468) and brass (KSS 1121-1126) are obtained with RF-GDAAS.
- keywords
- rf-glow discharge, atomic absorption spectrometry, non-conducting sample, direct solid analysis
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