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Laboratory Evaluation Of The Ecolyzer Carbon Monoxide Dosimeter.

Authors
Young-RJ; Huebener-DJ; McCarty-GE; Loebach-DV
Source
NIOSH :6 pages
Link
NIOSHTIC No.
00129226
Abstract
A direct reading of carbon-monoxide (630080) with an electrochemical sensor was evaluated. The operating principle of the Ecolyzer was based on the oxidation of carbon-monoxide to carbon-dioxide (124389) at a catalytically active electrode in an aqueous electrolyte. Test data included humidity and temperature studies to determine if the dosimeters would perform under adverse environmental conditions. Tests conducted at 75 degrees-F appeared to be quite accurate, but at 32 degrees the accuracy was not so good. Dosimeter linearity was good but there were errors at carbon-monoxide concentrations of 20 parts per million and below. Dosimeter accuracy when exposed to fluctuating carbon-monoxide concentrations was good. Tests at both high and low humidities appeared to be erratic. The shelf life was relatively short. After 12 weeks of storage, some of the units failed to zero or span correctly. The authors conclude that the Ecolyzer appears to be promising. The problems need to be worked out before it can be used reliably.
Keywords
NIOSH-Author; Sampling-equipment; Fumes; Safety-research; Safety-equipment; Air-contamination; Air-quality-control; Analytical-methods;
CAS No.
630-08-0; 124-38-9;
NTIS Accession No.
NTIS Price
Source Name
NIOSH, U.S. Department of Health, Education, and Welfare, Cincinnati, Ohio, 6 pages, 2 references
State
OH;
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