Portable spotter for fluorescent contaminants on surfaces

Patent · Tue Apr 29 04:00:00 EDT 1980

OSTI ID:5117834

Schuresko, D D

A portable fluorescence-based spotter for polynuclear aromatic hydrocarbon contamination on personnel and work area surfaces under ambient lighting conditions is provided. This instrument employs beam modulation and phase sensitive detection for discriminating between fluorescence from organic materials from reflected background light and inorganic fluorescent material. The device uses excitation and emission filters to provide differentiation between classes of aromatic orgaic compounds. Certain inorganic fluorescent materials, including heavy metal compounds, may also be distinguished from the organic compounds, despite both having similar optical properties.

• Assignee: Dept. of Energy
• Patent Number(s): US 4200801
• OSTI ID: 5117834
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
02 PETROLEUM
020600* -- Petroleum-- Health & Safety
04 OIL SHALES AND TAR SANDS
040700 -- Oil Shales & Tar Sands-- Health & Safety
AROMATICS
EQUIPMENT
FLUORESCENCE
LUMINESCENCE
MEASURING INSTRUMENTS
MONITORING
MONITORS
ORGANIC COMPOUNDS
PERSONNEL MONITORING
RADIATION MONITORING
RADIATION MONITORS
SURFACE CONTAMINATION MONITORS