Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Preliminary evaluation of an active end-of-service-life indicator for organic vapor cartridge respirators.

Authors
Moyer-ES; Findlay-MW; Maclay-GJ; Stetter-JR
Source
Am Ind Hyg Assoc J 1993 Aug; 54(8):417-425
NIOSHTIC No.
00216465
Abstract
The performance of a microsensor intended for use as an active end of service life indicator for organic vapor cartridge respirators was evaluated. The microsensor was a microwatt chemiresistor consisting of an activated carbon/silicone rubber film layered onto a phenolic substrate containing two etched copper electrodes linked to a Wheatstone bridge circuit and a light emitting diode (LED) alarm. Microsensors were embedded at various depths into charcoal containing organic vapor cartridges interfaced to a vapor generating/sampling system and a Miran infrared analyzer. The cartridges and sensors were challenged with 750, 1,000, 1,500, or 2,000 parts per million ethyl-acetate (141786) vapor. The microsensors were able to detect ethyl-acetate breakthrough; however, they were not as sensitive as the infrared analyzer and usually had slower response times. The microsensors also demonstrated significantly more background noise and drift than the infrared analyzer. The authors conclude that the microsensor can detect organic vapors and has the potential to be developed as an active end of service life indicator for organic vapor cartridge respirators. The sensor must be placed well inside the charcoal bed. The stability and sensitivity of the microsensor must be improved.
Keywords
NIOSH-Publication; NIOSH-Author; NIOSH-Grant; Respirators; Vapor-detectors; Organic-vapors; Industrial-hygiene; Adsorbents; Equipment-reliability; Chemical-cartridge-respirators; Laboratory-testing;
Contact
Transducer Research, Inc 1228 Olympus Drive Naperville, Ill 60540
CODEN
AIHAAP
CAS No.
141-78-6;
Publication Date
19930801
Document Type
Journal Article;
Funding Amount
399790.00
Funding Type
Grant;
Fiscal Year
1993
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R44-OH-02312
Issue of Publication
8
ISSN
0002-8894
Priority Area
Respirator Research; Respirators;
Source Name
American Industrial Hygiene Association Journal
State
IL;
Performing Organization
Transducer Research, Inc., Naperville, Illinois
TOP