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

Jonas Model Applicability for Predicting Organic Vapor/Gas Cartridge Performance: Theory, Method, and Preliminary Findings.

Authors
Moyer-ES
Source
NIOSH 1989 Mar:83 pages
Link
NIOSHTIC No.
00187464
Abstract
An evaluation was undertaken of the Jonas kinetic model for routinely evaluating the performance of organic vapor (OV) cartridges. The model could be useful in predicting OV breakthrough characteristics for untested vapors by predicting cartridge life against a wide range of compounds. Commercially available OV respirator cartridges were tested in a stacked configuration to resemble packed columns of varying bed length and sorbent weight to evaluate the applicability of the approach. The Jonas model has shown that the kinetic adsorption capacity and gas adsorption rate of a packed charcoal sorbent bed is described by the linear relationship between gas breakthrough time and sorbent weight as predicted by a modified Wheeler equation. The modified Wheeler equation was a simple mathematical formulation relating breakthrough time with two adjustable parameters, the capacity parameter and the kinetic parameter. The kinetic parameter was uncertain, and depended on the method of data analysis employed. According to the author, until such time as the influences on this parameter can be better identified, this will remain one limiting factor of this method. Further study is needed at other than baseline conditions before conclusions can be drawn as to the adaptability of this method for wider usage.
Keywords
NIOSH-Author; Personal-protective-equipment; Respiratory-protection; Air-quality-monitoring; Measurement-equipment; Gas-detectors; Analytical-methods; Chemical-analysis;
Publication Date
19890301
Fiscal Year
1989
NTIS Accession No.
PB89-203434
NTIS Price
A06
NIOSH Division
DSR;
Priority Area
Control Technology and Personal Protective Equipment; Research Tools and Approaches;
Source Name
Division of Safety Research, NIOSH, Morgantown, West Virginia, 83 pages, 26 references
State
VA; WV;
TOP