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Optical high acidity sensor

Patent ·
OSTI ID:871060
 [1];  [2];  [3];  [4]
  1. Jemez Springs, NM
  2. Los Alamos, NM
  3. Lynnwood, WA
  4. Martinez, GA
+ Show Author Affiliations
An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and, a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM
DOE Contract Number:
W-7405-ENG-36
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 5650331
OSTI ID:
871060
Country of Publication:
United States
Language:
English

References (1)

Polymer-coated cylindrical waveguide absorption sensor for high acidities journal August 1989

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Related Subjects

/436/356/422/
16
acid
acid concentrations
acid molarity
acid resistant
acidity
adapted
apparatus
attached
chamber
coating
collector
collimate
collimated
collimated light
comparer
composition
concentrations
contact
detectable
determined
determining
disclosed
fiber
fiber optic
focusing
interrogation
lens
light
light source
measured
measured response
measurer
method
molar
molarity
optic
optic light
optical
passing
polymeric
polymeric composition
predetermined
preferably
range
receiving
resistant
resistant polymeric
response
sample
sample solution
sensor
solution
solutions
source
standards
transmission
transversely
whereby