Portable spotter for fluorescent contaminants on surfaces

Patent · Tue Jan 01 00:00:00 EST 1980

OSTI ID:863567

Schuresko, Daniel D ^[1]

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1. Oak Ridge, TN

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 organic compounds. Certain inorganic fluorescent materials, including heavy metal compounds, may also be distinguished from the organic compounds, despite both having similar optical properties.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4200801
• OSTI ID: 863567
• Country of Publication: United States
• Language: English

Related Subjects

portable
spotter
fluorescent
contaminants
surfaces
fluorescence-based
polynuclear
aromatic
hydrocarbon
contamination
personnel
ambient
lighting
conditions
provided
instrument
employs
beam
modulation
phase
sensitive
detection
discriminating
fluorescence
organic
materials
reflected
background
light
inorganic
material
device
excitation
emission
filters
provide
differentiation
compounds
including
heavy
metal
distinguished
despite
similar
optical
properties
aromatic organic
sensitive detection
background light
fluorescent material
heavy metal
organic compound
metal compound
organic materials
metal compounds
organic compounds
organic material
optical properties
aromatic hydrocarbon
phase sensitive
carbon contamination
ambient light
polynuclear aromatic
similar optical
/250/