Simplified analytical apparatus for field deployable...

Details Simplified analytical apparatus for field deployable... Simplified analytical apparatus for field deployable...

2007-01-30

2007-01-30

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

C356S436000, C356S437000

Reexamination Certificate

active

10336452

ABSTRACT:
The invention simplifies the apparatus for the analysis of organic and inorganic compounds in solutions and atmospheres, or particulates in atmospheres. The apparatus supports molecular fluorescence and absorption analyses of trace environmental contaminants. The design of the apparatus allows for deployment within the confines of a monitoring well or other locations of limited access. The primary advantages are the easy replacement and configuration of excitation sources and detectors to configure a sample chamber for a particular analysis while using mininal volumes of sample or reagent. Miminizing the volume of reagent used is a very important consideration in automated field analyses. The invention uses light emitting diodes (LEDs) and photodetectors coupled to fiber optics to reduce the complexity and cost of the optics and electronics of the measurement components. The invention allows for the automation of sampling, sample preparation and analysis of environmental contaminants in natural waters and particulates in atmospheres, i.e. bacteria spores. The composition of the walls of the sample chamber determines the type of sample, natural water or atmosphere, that can be analyzed by the apparatus.

REFERENCES:
patent: 3809913 (1974-05-01), Prellwitz
patent: 3838925 (1974-10-01), Marks
patent: 5094526 (1992-03-01), Freud et al.
patent: 5116759 (1992-05-01), Klainer et al.
patent: 5241367 (1993-08-01), Grob et al.
patent: 5291030 (1994-03-01), Brors
patent: 5510895 (1996-04-01), Sahagen

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