Spectrochemical Analysis in the Vacuum Ultraviolet with the Hollow-Cathode Light Source—Part I. Qualitative Analysis

1967 ◽  
Vol 21 (3) ◽  
pp. 172-175 ◽  
Author(s):  
Giulio Milazzo ◽  
Nello Sopranzi
Keyword(s):  
Qualitative Analysis ◽  
Light Source ◽  
Hollow Cathode ◽  
Vacuum Ultraviolet ◽  
Spectrochemical Analysis ◽  
Ultraviolet A ◽  
The Given ◽  
Theoretical Considerations

On the basis of some theoretical considerations concerning the analyzability of elements that have their resonance lines in the vacuum ultraviolet, a hollow-cathode light source of new design has been tested in connection with a vacuum spectrograph. The results, which show an improvement over those reported in the literature, are tabulated. The limit of detectability under the given conditions was at 0.01 μg iodine.

Spectrochemical Analysis in the Vacuum Ultraviolet (VUV) with the Hollow-Cathode Light Source—II. Quantitative Analysis

1967 ◽  
Vol 21 (4) ◽  
pp. 256-260 ◽  
Author(s):  
Giuiio Milazzo ◽  
Nello Sopranzit
Keyword(s):  
Quantitative Analysis ◽  
Potassium Chloride ◽  
Light Source ◽  
Hollow Cathode ◽  
Spectral Region ◽  
Vacuum Ultraviolet ◽  
Spectrochemical Analysis ◽  
Sources Of Error ◽  
Chloride Matrix

The use of a cooled hollow-cathode light source of new design was investigated for quantitative spectrochemical analysis of iodine in the vacuum ultraviolet (VUV). The conditions of the discharge and all prerequisites were tested, taking into account many possible sources of error. The results, shown in Tables and in graphs, indicate that this kind of light source gives good results for spectrochemical analysis in the VUV, for elements having the most sensitive lines in this spectral region. The range covered in this investigation lies between 1 and 100 μg iodine in a 1-mg potassium chloride matrix.

scholarly journals Kinetics of 1- and 2-methylallyl + O2 reaction, investigated by photoionisation using synchrotron radiation

2021 ◽  
Author(s):  
Domenik Schleier ◽  
Engelbert Reusch ◽  
Marius Gerlach ◽  
Tobias Preitschopf ◽  
Deb Pratim Mukhopadhyay ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Reaction Kinetics ◽  
Molecular Oxygen ◽  
Light Source ◽  
Storage Ring ◽  
Vacuum Ultraviolet ◽  
Flow Tube ◽  
Tube Reactor ◽  
Swiss Light Source ◽  
Kinetics Of

The reaction kinetics of the isomers of the methylallyl radical with molecular oxygen has been studied in a flow tube reactor at the vacuum ultraviolet (VUV) beamline of the Swiss Light Source storage ring.

Light source with a cooled hollow cathode for excitation of spectra of monolithic dielectric samples

1982 ◽  
Vol 36 (6) ◽  
pp. 623-626
Author(s):  
A. I. Drobyshev ◽  
E. V. Gorchakova ◽  
Yu. I. Turkin
Keyword(s):  
Light Source ◽  
Hollow Cathode

scholarly journals Electron-beam–ignited, high-frequency–driven vacuum ultraviolet excimer light source

2011 ◽  
Vol 94 (5) ◽  
pp. 53001 ◽  
Author(s):  
T. Dandl ◽  
H. Hagn ◽  
T. Heindl ◽  
R. Krücken ◽  
J. Wieser ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Source ◽  
High Frequency ◽  
Vacuum Ultraviolet ◽  
Excimer Light Source

Performance of the vacuum ultraviolet high-resolution and high-flux beamline for chemical dynamics studies at the Advanced Light Source

1997 ◽  
Vol 68 (5) ◽  
pp. 1945-1951 ◽  
Author(s):  
P. A. Heimann ◽  
M. Koike ◽  
C. W. Hsu ◽  
D. Blank ◽  
X. M. Yang ◽  
...  
Keyword(s):  
High Resolution ◽  
Light Source ◽  
Vacuum Ultraviolet ◽  
High Flux ◽  
Chemical Dynamics ◽  
Advanced Light Source

Simultaneous photochemical generation of ozone in the gas phase and photolysis of aqueous reaction systems using one VUV light source

1997 ◽  
Vol 35 (4) ◽  
pp. 41-48 ◽  
Author(s):  
T.M. Hashem ◽  
M. Zirlewagen ◽  
A. M. Braun
Keyword(s):  
Gas Phase ◽  
Light Source ◽  
Organic Pollutants ◽  
Vacuum Ultraviolet ◽  
Oxidative Degradation ◽  
Reaction System ◽  
Photochemical Reactions ◽  
Experimental Conditions ◽  
Photochemical Generation ◽  
Kinetics Of

A more efficient use of vacuum ultraviolet (VUV) radiation produced by an immersed Xe-excimer light source (172 nm) was investigated for the oxidative degradation of organic pollutants in aqueous systems. All emitted VUV radiation from one light source was used in two simultaneous but separate photochemical reactions: (1) photochemical generation of ozone by irradiating oxygen in the gas phase and (2) photolysis of the aqueous reaction system. The gas stream containing the generated ozone is sparged into the reaction system, thus enhancing the oxidative degradation of organic pollutants. The photochemically generated ozone in the gas phase was quantitatively analyzed, and the kinetics of the degradation of 4-chlorophenol (4-CP) and of the dissolved organic carbon (DOC) were determined under different experimental conditions. The results show that the rates of degradation of the substrate and of the DOC decrease in the order of the applied processes, VUV/O3 > O3 > VUV.

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