Abstract:
New and improved method and apparatus for the analysis of samples by atomic spectroscopy are provided and comprise sample atom production means taking the form of body means having a generally central sample chamber extending generally longitudinally therethrough, and heating means for heating said chamber and adjacent areas to convert said sample to atoms. Sample stream generation means in the nature of drop generator means are operably associated with said body means at the lower extremity thereof and are effective to generate a stream of sample drops of substantially uniform size for upward passage through said body chamber to result in a formation of a concentrated atom cloud or sample volume of the sample atoms of interest above said body means. Means are provided to modulate the formation of said sample volume by said sample drop stream to provide for more accurate read-out of the sample atom concentration of interest. Means are also provided to enable the simultaneous multielement analysis of a sample by atom spectroscopy and comprise a plurality of drop generator means which are operable to generate a plurality of sample drop streams for passage through said body chamber to form said sample volume, and means are provided to periodically and alternately deflect said sample drop streams from passage into said sample volume to substantially eliminate signal interference. As disclosed, the new and improved method and apparatus of the invention are particularly adaptable for use in automatically operable sample supply, treatment and analysis means which are operable to automatically analyze a series stream of a large plurality of different samples on a continuous flow basis.
Abstract:
Apparatus for processing a plurality of successive electrical signals of varying magnitudes comprises an amplifier arrangement whose gain is varied in phase with the signal being then received, whereby the output is maintained within a predetermined range the amplifier arrangement is operated under its optimum load conditions. The amplifier arrangement is designed in junction with spectroscopic apparatus for effecting simultaneous multielement analysis.
Abstract:
Apparatus for processing a plurality of successive electrical signals of varying magnitudes comprises an amplifier arrangement whose gain is varied in phase with the signal being then received, whereby the output is maintained within a predetermined range the amplifier arrangement is operated under its optimum load conditions. The amplifier arrangement is designed in junction with spectroscopic apparatus for effecting simultaneous multielement analysis.
Abstract:
Apparatus for processing a plurality of successive electrical signals of varying magnitudes comprises an amplifier arrangement whose gain is varied in phase with the signal being then received, whereby the output is maintained within a predetermined range the amplifier arrangement is operated under its optimum load conditions. The amplifier arrangement is designed in junction with spectroscopic apparatus for effecting simultaneous multielement analysis.
Abstract:
Apparatus for processing a plurality of successive electrical signals of varying magnitudes comprises an amplifier arrangement whose gain is varied in phase with the signal being then received, whereby the output is maintained within a predetermined range the amplifier arrangement is operated under its optimum load conditions. The amplifier arrangement is designed in junction with spectroscopic apparatus for effecting simultaneous multielement analysis.