초록 ▼

A personal monitoring device, dosimeter, or badge-like 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 adso

A personal monitoring device, dosimeter, or badge-like 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, permeates and is transported through the membrane and is then adsorbed on the activated carbon at a rate proportional to the external concentration 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 temperature and humidity effects, and free of other possible interferences. 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.

대표청구항 ▼

A monitoring device useful for the detection and and quantification of the exposure of a wearer of the device to an air-vinyl chloride mixture, which comprises: a body provided with a shallow top cavity which is filled with particulate activated carbon, covered and physically retained in place by a

A monitoring device useful for the detection and and quantification of the exposure of a wearer of the device to an air-vinyl chloride mixture, which comprises: a body provided with a shallow top cavity which is filled with particulate activated carbon, covered and physically retained in place by a membrane permeable to vinyl chloride which is dissolved within, transported through, then released from the opposite side of said membrane and then adsorbed on the activated carbon in direct proportion to the exposure of the wearer to vinyl chloride as related to the external vinyl chloride concentration and time of exposure.