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Showing 1 to 20 of 29 for “"atomic fluorescence"”.
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Portable Tungsten Coil Atomic Emission and Atomic Fluorescence Spectrometry
Tungsten Coil Atomic Emission Spectrometry is an ideal technique for field applications because of its simplicity, low cost, low power requirement and independence from cooling systems. A new, portable, compact design is reported here. The tungsten coil is extracted from a 24 V, 250 W commercial …
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An Atom Reservoir for Automated Flame Atomic Fluorescence Spectrometry
Made available in DSpace on 2014-12-10T23:01:52Z (GMT). No. of bitstreams: 1 7414564.pdf: 3596939 bytes, checksum: 27164ba214c809aff00ec9e3e9370052 (MD5) Previous issue date: 1974
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Critical Evaluation of Some Atom Reservoirs for Atomic Fluorescence Spectroscopy
Made available in DSpace on 2014-12-13T20:10:23Z (GMT). No. of bitstreams: 1 7811264.pdf: 5569152 bytes, checksum: 5d4cdce5365b50ce194940b940bed844 (MD5) Previous issue date: 1978
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Considerations in Laser-Excited Atomic Fluorescence Spectroscopy and Related Investigations
Made available in DSpace on 2014-12-10T23:01:21Z (GMT). No. of bitstreams: 1 7219818.pdf: 8606797 bytes, checksum: 96af14b4b00ceec242cd9f4078522eb1 (MD5) Previous issue date: 1972
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Atomic Fluorescence and Absorption Spectrometry With a Microprocessor-Controlled Dye Laser
Made available in DSpace on 2014-12-13T20:10:17Z (GMT). No. of bitstreams: 1 7804112.pdf: 5506241 bytes, checksum: 494aacb010c2f5e79fe09e6164d00927 (MD5) Previous issue date: 1977
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The Application of Fourier Transform Techniques to Multielement Atomic-Fluorescence Determinations
Made available in DSpace on 2014-12-10T23:01:55Z (GMT). No. of bitstreams: 1 7500307.pdf: 3840544 bytes, checksum: f411a9057b49124843f0ef1db3303f26 (MD5) Previous issue date: 1974
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The Development and Application of an Automated Multielement Atomic Emission/atomic Fluorescence Flame Spectrometer
Made available in DSpace on 2014-12-13T20:09:47Z (GMT). No. of bitstreams: 1 7606973.pdf: 13468746 bytes, checksum: 4cebc020532b33a8ad3a072ecb0e4356 (MD5) Previous issue date: 1975
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Mercury-Thiourea Complex Ion Chromatography With on-Line Cold Vapor Generation and Atomic Fluorescence Spectrometric Detection (hgtu/ic-Cvafs)
Two specialized sample preparation chemistries were developed to be used with the sample introduction methods of the HgTu/IC-CVAFS system: one for biotic tissues, and one for sediments. A digestion system for the simultaneous measurement of MeHg and HgII in biota samples using sequential HNO3 …
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The determination of mercury and its organo compounds by high performance liquid chromatography-atomic flourescence spectrometry.
… determination of total mercury by cold vapour atomic fluorescence spectrometry were investigated. Satisfactory results were obtained from a closed microwave digestion procedure for which 0.5g of soil or sediment sample was taken and heated with 3 mL of nitric acid and 1 ml of hydrogen peroxide. …
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Inter-Rydberg excitation spectroscopy of krypton dimers
… fluoride excimer laser was used to excite the atomic krypton 6p (3/2) $\sb2$ state, which produced metastable dimers via collisions with the 300 Torr krypton background. Molecular transitions originating from the metastable 5s$\sp3\Sigma\sbsp{\rm u}{+}(1\sb{\rm u}, 0\sbsp{\rm u}{-}$) were then …
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Development and application of novel tracers for environmental applications.
… and inorganic polymers based on narrow band atomic fluorescence, have been developed for deployment as environmental tracers. The use of discrete fluorescent species in an environmentally stable host has been investigated to replace existing toxic, broad band molecular dye tracers. The narrow …
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The on line determination of mercury in process streams using atomic spectrometry
… and waste streams have been developed, utilising atomic fluorescence spectrometry (AFS) as the basis for detection. Instrumentation has been designed for unattended continuous operation. Laboratory chemistries for the vapour generation of mercury, normally performed off-line in batch mode, have …
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Development and characterization of a low power helium microwave induced plasma for spectrometric determinations of metals and nonmetals
… source for metals and nonmetals with the use of atomic emission spectrometry (AES) and atomic fluorescence spectrometry (AFS). A torodial plasma was sustained in the cavity solely by the helium gas output of the nebulizer. Aqueous samples from a pneumatic glass nebulizer/Scott spray chamber were …
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On The Nature Of Excited States In Ruthenium Complexes: Towards Renewable Energy
… are based on Einsteinian rate constants for atomic fluorescence spectra and not that of phosphorescent donor-acceptor complexes. Other factors should be considered such as difference in spin multiplicity and molecular distortions in vibrational modes that are coupled to electronic transitions …
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The effects of organic gases on atomic spectrometric signals in the ICP
… of the ICP has been as an excitation cell for atomic emission spectrometry (AES). More recently, it has been used as an atomization cell for atomic fluorescence spectrometry (AFS). Since the ICP is an energetic source, the vaporization process is efficient. This high temperature promotes …
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Development Of A Two-Color Optical Diagnostic For The Determination Of Engine In-Cylinder Soot Temperature And Volume Fraction Evolution With A Flame-Calibrated Emissivity Model
… (CARS), vibrational thermally-assisted fluorescence, two-line atomic fluorescence, two-line molecular fluorescence, chemiluminescence emission, absorption thermometry and soot two-color thermometry -- commonly provide the sole means of non-intrusively investigating flame temperature. …
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Mercury species in natural gas condensate
… to 900°C released the mercury for measurement by atomic fluorescence spectrometry (AFS). The recoveries for eight mercury species spiked (10 to 50 ng ml into toluene and condensate were generally over 90 %. The instrumental limit of detection (LOD) was 11 pg. The total mercury content of gas …
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Speciation of Mercury by Chromatography Coupled with Atomic Spectrometry
… This instrument couples a GC oven to a modified atomic fluorescence detector via a ceramic pyrolyser. Organomercury compounds in dichloromethane solvent were directly injected through a Programmable Temperature Vaporiser Injector onto a DBl Megabore column. Once separated, the compounds eluted …
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Detection of vapor phase mercury species by laser fluorescence methods
… stack gases. It is based on laser-induced fluorescence techniques; photofragment fluorescence spectroscopy for detection of volatile mercury compounds, and resonance fluorescence for detection of elemental mercury. The capabilities and limitations of these detection techniques are …
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