G - Physics – 01 – N
Patent
G - Physics
01
N
150/21
G01N 33/00 (2006.01) G01N 30/00 (2006.01)
Patent
CA 1104043
ABSTRACT OF THE DISCLOSURE A personal monitoring device, dosimeter, or badgelike apparatus for measuring the exposure of personnel to pollutant toxic organic vaporous materials, notably vinyl chloride, comprised of a body portion provided with a relatively shallow top cavity, or cup-like member completely filled with an adsorbent, absorbent or reactive material, preferably activated carbon, covered, closed and physically held in place by a contiguous, thin non-porous membrane, permeable to the organic vaporous materials, notably vinyl chloride. The polluting toxic material, e.g., vinyl chloride, permeats and is trans- ported through the membrane and is then adsorbed on the activated carbon at a rate proportional to the external con- centration during the period of exposure and is subsequently removed for analysis, as by gas chromatography. The device is simple in construction, easy to use, insensitive to tempera- ture and humidity effects, and free of other possible inter- ferences. The device is ideally suited to personal monitoring programs required by OSHA regulations, and the analytical data obtained represents a time-weighted-average exposure which requires no further data evaluations.
281352
Nelms Leonard H.
Reiszner Kenneth D.
West Philip W.
Board Of Supervisors Of Louisiana State University And Agricultu
Borden Ladner Gervais Llp
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