Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Reexamination Certificate
2005-01-25
2005-01-25
Evans, F. L. (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
C356S036000
Reexamination Certificate
active
06847446
ABSTRACT:
The present invention describes an apparatus capable of specific detection of environmental chemicals in water and air. The apparatus combines a specific chemical sampler, encompassing selectively adsorbing material to automatically sample air or water samples and trap target chemicals, and uses Laser Induced Breakdown Spectroscopy for analysis of trapped chemicals. Operation of the apparatus is controlled by a computer interface. In order to provide the accuracy needed for chemical detection and adaptability required for field use it is required to incorporate Laser Induced Breakdown Spectroscopy with sample collection utilizing selective adsorbents. The invention provides a chemical detection device for concentrating chemical samples from water or air environments and then analyzing these samples with a low power highly portable Laser Induced Breakdown Spectroscope.
REFERENCES:
patent: 3653773 (1972-04-01), Childs
patent: 3654801 (1972-04-01), Keefer et al.
patent: 3832060 (1974-08-01), Dahlquist
patent: 4220414 (1980-09-01), Barringer
patent: 4561777 (1985-12-01), Radziemski et al.
Evans F. L.
Karasek John J.
Mills III John Gladstone
The United States of America as represented by the Secretary of
LandOfFree
Chemical analysis and detection by selective adsorbent... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chemical analysis and detection by selective adsorbent..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical analysis and detection by selective adsorbent... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3397910