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Title: Hexavalent chromium monitor

Abstract

A monitor is provided for use in measuring the concentration of hexavalent chromium in a liquid, such as water. The monitor includes a sample cell, a light source, and a photodetector. The sample cell is in the form of a liquid-core waveguide, the sample cell defining an interior core and acting as a receiver for the liquid to be analyzed, the interior surface of the sample cell having a refractive index of less than 1.33. The light source is in communication with a first end of the sample cell for emitting radiation having a wavelength of about and between 350 to 390 nm into the interior core of the waveguide. The photodetector is in communication with a second end of the waveguide for measuring the absorption of the radiation emitted by the light source by the liquid in the sample cell. The monitor may also include a processor electronically coupled to the photodetector for receipt of an absorption signal to determine the concentration of hexavalent chromium in the liquid.

Inventors:
;
Issue Date:
Research Org.:
Mississippi State Univ., Mississippi State, MS (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175318
Patent Number(s):
6878943
Application Number:
10/227,191
Assignee:
Mississippi State University (Mississippi State, MS)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
FC26-98FT40395
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Tao, Shiquan, and Winstead, Christopher B. Hexavalent chromium monitor. United States: N. p., 2005. Web.
Tao, Shiquan, & Winstead, Christopher B. Hexavalent chromium monitor. United States.
Tao, Shiquan, and Winstead, Christopher B. Tue . "Hexavalent chromium monitor". United States. https://www.osti.gov/servlets/purl/1175318.
@article{osti_1175318,
title = {Hexavalent chromium monitor},
author = {Tao, Shiquan and Winstead, Christopher B.},
abstractNote = {A monitor is provided for use in measuring the concentration of hexavalent chromium in a liquid, such as water. The monitor includes a sample cell, a light source, and a photodetector. The sample cell is in the form of a liquid-core waveguide, the sample cell defining an interior core and acting as a receiver for the liquid to be analyzed, the interior surface of the sample cell having a refractive index of less than 1.33. The light source is in communication with a first end of the sample cell for emitting radiation having a wavelength of about and between 350 to 390 nm into the interior core of the waveguide. The photodetector is in communication with a second end of the waveguide for measuring the absorption of the radiation emitted by the light source by the liquid in the sample cell. The monitor may also include a processor electronically coupled to the photodetector for receipt of an absorption signal to determine the concentration of hexavalent chromium in the liquid.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {4}
}

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Works referenced in this record:

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