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公开(公告)号：DE19641177A1
公开(公告)日：1998-03-26
申请号：DE19641177
申请日：1996-09-24
Applicant: INST BIOPROZESS ANALYSENMESST
Inventor： HERRMANN FRANK-PETER DR SC NAT , LAUCKNER GERALD PROF DR ING , HOTTENROTT JOACHIM MARCO DIPL
Abstract: The chamber consists of a horizontal bore (2) for the gas flow intercepted by a vertical bore (5) holding the electrodes (6.1,6.2,6.3) from the exciting source (6) opposite an isolating section (7) holding an outer helical electrode (8) and an inner electrode (9) which is either helical or cylindrical in shape. These act as anode and cathode respectively. The outer electrode has gas-permeable sections and there is free space between neighbouring windings (8.1,8.2). This ensures wide dissemination of the gas mixture flowing through the bore in the detector, even if the current speed is very low, giving greater accuracy.
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公开(公告)号：DE4440667C2
公开(公告)日：1997-01-09
申请号：DE4440667
申请日：1994-11-04
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公开(公告)号：DE4440667A1
公开(公告)日：1996-05-09
申请号：DE4440667
申请日：1994-11-04
Inventor： LAUCKNER GERALD PROF DR ING , HERMANN FRANK-PETER DR , HERMANN WALTER DIPL ING , KOS PETER DR RER NAT
Abstract: Process to find chemicals, esp. polycyclic aromatic hydrocarbons (PAH) in the ground or in liquids, using optical spectroscopy. A complete spectrum is measured, made up of the fluorescence spectrum and further spectral signal components. The fluorescence spectrum is found by correction with the other spectral components. Also claimed is a device to carry out the above process having a radiation source (3) with filter (4) and a detection unit (8), linked to a controller and a computer (10) for measurement registering and calculation.
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