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Title: Automatic electrochemical ambient air monitor for chloride and chlorine

Abstract

An electrochemical monitoring system has been provided for determining chloride and chlorine in air at levels of from about 10-1000 parts per billion. The chloride is determined by oxidation to chlorine followed by reduction to chloride in a closed system. Chlorine is determined by direct reduction at a platinum electrode in 6 M H.sub.2 SO.sub.4 electrolyte. A fully automated system is utilized to (1) acquire and store a value corresponding to electrolyte-containing impurities, (2) subtract this value from that obtained in the presence of air, (3) generate coulometrically a standard sample of chlorine mixed with air sample, and determine it as chlorine and/or chloride, and (4) calculate, display, and store for permanent record the ratio of the signal obtained from the air sample and that obtained with the standard.

Inventors:
 [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
UNION CARBIDE CORP
OSTI Identifier:
862593
Patent Number(s):
3969209
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
automatic; electrochemical; ambient; air; monitor; chloride; chlorine; monitoring; provided; determining; levels; 10-1000; billion; determined; oxidation; followed; reduction; closed; direct; platinum; electrode; electrolyte; automated; utilized; acquire; store; value; corresponding; electrolyte-containing; impurities; subtract; obtained; presence; generate; coulometrically; standard; sample; mixed; determine; calculate; display; permanent; record; ratio; signal; ambient air; air monitor; air sample; value corresponding; direct reduction; containing impurities; chemical monitoring; /204/324/

Citation Formats

Mueller, Theodore R. Automatic electrochemical ambient air monitor for chloride and chlorine. United States: N. p., 1976. Web.
Mueller, Theodore R. Automatic electrochemical ambient air monitor for chloride and chlorine. United States.
Mueller, Theodore R. Tue . "Automatic electrochemical ambient air monitor for chloride and chlorine". United States. https://www.osti.gov/servlets/purl/862593.
@article{osti_862593,
title = {Automatic electrochemical ambient air monitor for chloride and chlorine},
author = {Mueller, Theodore R},
abstractNote = {An electrochemical monitoring system has been provided for determining chloride and chlorine in air at levels of from about 10-1000 parts per billion. The chloride is determined by oxidation to chlorine followed by reduction to chloride in a closed system. Chlorine is determined by direct reduction at a platinum electrode in 6 M H.sub.2 SO.sub.4 electrolyte. A fully automated system is utilized to (1) acquire and store a value corresponding to electrolyte-containing impurities, (2) subtract this value from that obtained in the presence of air, (3) generate coulometrically a standard sample of chlorine mixed with air sample, and determine it as chlorine and/or chloride, and (4) calculate, display, and store for permanent record the ratio of the signal obtained from the air sample and that obtained with the standard.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {7}
}

Patent:

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