Journal ArticleDOI
Ultraviolet absorption spectra of ammonia and deuterated ammonia in solid argon
J.B. Coon,C.E. Jones,C.E. Blount +2 more
Reads0
Chats0
TLDR
In this article, the authors extended the spectrum of the 2100 A system of ammonia to include the dependence of the absorption spectrum on the temperature of the matrix and the observed temperature dependence of ammonia in argon are more satisfactorily explained for trapped ammonia molecules free to rotate without nuclear spin interconversion.About:
This article is published in Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.The article was published on 1980-01-01. It has received 18 citations till now. The article focuses on the topics: Absorption spectroscopy.read more
Citations
More filters
Journal ArticleDOI
The ultraviolet absorption spectrum of the à 1A‘2←X̃ 1A1 transition of jet‐cooled ammonia
Veronica Vaida,M. I. McCarthy,P. C. Engelking,Pavel Rosmus,Hans-Joachim Werner,Peter Botschwina +5 more
TL;DR: In this paper, the A←X absorption spectra of NH3 and ND3, recorded in a cold molecular jet, are presented, and relative band intensities for v2 progressions are recorded, and homogeneous lifetime broadenings of vibrational levels of the A state are reported.
Journal ArticleDOI
Mutual interactions of elements in the hydride technique in atomic absorption spectrometry
B. Welz,Marianne Melcher +1 more
TL;DR: In this paper, the interference from selenium (IV) on the determination of arsenic (III) and -V) by hydride-generation atomic absorption spectrometry is removed if copper is added to the sample solution.
Journal ArticleDOI
Vapour generation atomic absorption spectrometry
Xiu-Ping Yan,Zhe-Ming Ni +1 more
TL;DR: Vapour generation atomic absorption spectrometry has been systematically described as a technique for the determination of trace elements, including hydride generation, cold vapour generation and other chemical vapour generator AAS.
Journal ArticleDOI
Trends in optical spectrochemical trace analysis with plasma sources
TL;DR: The state-of-the-art and trends in the development of optical spectrochemical trace analysis with inductively-coupled plasmas (i.c.c., the air and helium i.i.p., and microwave-induced Plasmas) are discussed in this paper.
Journal ArticleDOI
Determination of arsenic at the picogram level by atomic absorption spectrometry with miniaturized suction-flow hydride generation
TL;DR: In this paper, a continuous flow hydride generator is modified and miniaturized for the determination of picogram amounts of arsenic by atomic absorption spectrometry, which has a detection limit of 0.08 ng As ml −1 (24 pg).
References
More filters
Journal ArticleDOI
Infrared Spectra of Ammonia Suspended in Solid Nitrogen
TL;DR: In this paper, the infrared spectra of ammonia suspended in solid nitrogen at 20°K was analyzed and a large enhancement of ν3, 3440 cm-1, occurs relative to ν1, 3332 cm-2, just as observed for the pure solid, and the umbrella mode ν2 shows no evidence of inversion nor of free rotation.
Journal ArticleDOI
Infrared Matrix‐Isolation Studies of Nuclear‐Spin‐Species Conversion
TL;DR: In this paper, the time evolution of intensities in the fine structure of infrared bands of CH3D, H2O, and NH3 isolated in rare gas matrices in the temperature region 6.5°-20°K have been made.
Journal ArticleDOI
Infrared Spectroscopic Evidence for the Rotation of the Ammonia Molecule in Solid Argon and Nitrogen
TL;DR: In this paper, high-resolution infrared spectra (of the symmetric bending mode) of ammonia suspended at high dilution in solid argon and nitrogen have been obtained, and the frequency separations of the bands, their temperature dependence, and their extreme sharpness appear to be compatible with a model in which the ammonia molecule executes quantized rotation in these solids.
Journal ArticleDOI
Far infrared rotational transitions of ammonia in an argon matrix
J.A. Cugley,A.D.E. Pullin +1 more
TL;DR: In this article, the infrared spectra of NH 3 and ND 3 trapped in an argon matrix were studied in the 10-50 cm −1 region and temperature variation from 13 to 20°K was used to characterize the observed bands as due to rotation of the NH 3, or ND 3 molecule.
Journal ArticleDOI
Ultraviolet Absorption Spectrum of Ammonia in Solid Argon at 4.2°K
TL;DR: A series of absorption bands in the region 1600 to 1900 A has been observed in thin films of solid argon containing between 0.3% and 3% of ammonia, and the bands are attributed to isolated NH3 as mentioned in this paper.
Related Papers (5)
Determination of antimony, arsenic, bismuth, selenium, tellurium, and tin in metallurgical samples using the hydride AA technique—I: Analysis of low-alloy steels
B. Welz,M. Melcher +1 more
Determination of volatile hydride-forming metals in steel by atomic absorption spectrometry
H.D. Fleming,R.G. Ide +1 more
Mechanisms of transition metal interferences in hydride generation atomic-absorption spectrometry. Part 3. Releasing effect of iron(III) on nickel interference on arsenic and selenium
Bernhard Welz,Marianne Melcher +1 more