Estimation of the emission temperature of an electrodeless discharge lamp and determination of the oscillator strength for the I(2P3/2) 183.038 nm resonance transition

2001 ◽  
Vol 56 (12) ◽  
pp. 2465-2478 ◽  
Author(s):  
Peter Spietz ◽  
Uldis Gross ◽  
Edgars Smalins ◽  
Johannes Orphal ◽  
John P Burrows
Keyword(s):  
Oscillator Strength ◽  
Resonance Transition ◽  
Electrodeless Discharge ◽  
Discharge Lamp

Mercury-204 Determination by Emission Spectroscopy

1965 ◽  
Vol 19 (3) ◽  
pp. 87-89 ◽  
Author(s):  
F. M. Smith
Keyword(s):  
Coefficient Of Variation ◽  
Isotope Shift ◽  
Emission Spectroscopy ◽  
Electrodeless Discharge ◽  
Discharge Lamp ◽  
Isotope Concentration ◽  
Single Determination ◽  
Time Required

The determination of mercury-204 was made by using the isotope shift of the 3984 A mercury line excited by electrodeless discharge. Densitometric traces were made from film recordings of the 3984 A line and the areas under the component peaks were determined. Ratios of each of these areas to the sum of the areas from all the line components are plotted against the isotope concentration to produce a working curve. The coefficient of variation for this method is approximately 11 percent The time required for a single determination (after fabrication of the discharge lamp) is about two hours.

Resonance Broadening and Oscillator strength of the Mercury Absorption Line 1850 Å

1975 ◽  
Vol 30 (4) ◽  
pp. 445-450 ◽  
Author(s):  
D. Gebhard ◽  
W. Behmenburg
Keyword(s):  
Absorption Line ◽  
Oscillator Strength ◽  
Resonance Absorption ◽  
New Method ◽  
Absorption Lines ◽  
Resonance Transition ◽  
Resonance Transitions ◽  
Resonance Broadening

Abstract A new method for the determination of f-values of resonance transitions from wing-measurements of selfbroadened resonance absorption lines is described. The method is applied to the mercury resonance transition 61 S0→61P1, λ 1850 Å. The resulting f-value of 1.08±0.05 agrees well with those obtained from other methods.

Capillary Discharge Lamp for the Direct Determination of Iodine by Flame Atomic Absorption Spectroscopy

1982 ◽  
Vol 36 (1) ◽  
pp. 22-25 ◽  
Author(s):  
M. D. Lowe ◽  
M. M. Sutton ◽  
O. E. Clinton
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Direct Determination ◽  
Capillary Discharge ◽  
Electrodeless Discharge ◽  
Discharge Lamp ◽  
Flame Atomic Absorption ◽  
Quartz Capillary

A simple and inexpensive iodine capillary discharge lamp has been developed. The spectrum of iodine was produced by maintaining a current-limited alternating current discharge in a helium-iodine vapor mixture flowing through a quartz capillary discharge tube. The performance of this spectral lamp as a source of resonance radiation for atomic absorption spectroscopy was evaluated using both unshielded and argon-shielded air-acetylene and nitrous oxide-acetylene flames. Sensitivities and detection limits for iodine obtained using the reported spectral source were found to compare favorably with data reported by other workers who used an electrodeless discharge lamp and a modified hollow cathode lamp.

Atomic Absorption Spectrophotometric Determination of 4-Hydroxy-3-Nitrobenzenearsonic Acid (Roxarsone) in Premixes

1975 ◽  
Vol 58 (5) ◽  
pp. 945-948 ◽  
Author(s):  
Larry J Frahm ◽  
Marven E Albrecht ◽  
J Patrick Mcdonnell
Keyword(s):  
Atomic Absorption ◽  
Ammonium Carbonate ◽  
Atomic Absorption Spectrophotometry ◽  
Electrodeless Discharge ◽  
Absorption Spectrophotometry ◽  
Coefficients Of Variation ◽  
Instrument Response ◽  
Variation Range ◽  
Standard Solution

Abstract Roxarsone (4-hydroxy-3-nitrobenzenearsonic acid) is extracted from the premix with aqueous 1% ammonium carbonate. The extract is filtered, diluted, and analyzed by atomic absorption spectrophotometry, using an air-acetylene flame and an arsenic electrodeless discharge lamp. The instrument response of the sample is compared to that of a standard solution of arsenic trioxide. Recoveries range from 99.7 to 100.4% and coefficients of variation range from 0.35 to 0.63%.

The electrodeless discharge lamp: a prospective tool for photochemistry

2001 ◽  
Vol 140 (3) ◽  
pp. 185-189 ◽  
Author(s):  
Petr Klán ◽  
Milan Hájek ◽  
Vladimı́r Cı́rkva
Keyword(s):  
Electrodeless Discharge ◽  
Discharge Lamp

Emission spectrometric determination of manganese and chromium in steels with a dual cathode glow discharge lamp

1989 ◽  
Vol 61 (19) ◽  
pp. 2137-2141 ◽  
Author(s):  
Kazuaki. Wagatsuma ◽  
Kichinosuke. Hirokawa
Keyword(s):  
Glow Discharge ◽  
Discharge Lamp

Microwave Heating in Conjunction with UV Irradiation: a Tool for the Oxidation of 1,4-Dihydropyridines to Pyridines

2009 ◽  
Vol 62 (1) ◽  
pp. 51 ◽  
Author(s):  
Chad M. Kormos ◽  
Rachel M. Hull ◽  
Nicholas E. Leadbeater
Keyword(s):  
Microwave Heating ◽  
Uv Irradiation ◽  
Oxidation Reactions ◽  
Electrodeless Discharge ◽  
Discharge Lamp

Microwave heating is used for the preparation of 1,4-dihydropyridines and then, in conjunction with UV irradiation, is used for the efficient oxidation of the 1,4-dihydropyridines to pyridines. The oxidation reactions are performed in a sealed vessel using oxygen as the oxidant and an electrodeless discharge lamp as the irradiation source.

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