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CISDOC database

Document ID (ISN)58203
CIS number 92-931
ISSN - Serial title Journal of Working Environment
Year 1992
Convention or series no.
Author(s) Oguchi H., Matsunobu K., Ohtsuka T.
Title Application of carbon monoxide passive dosimeter tubes to short-term exposure measurements
Original title Issanka tanso passhibu doshimēta no tanjikan sokutei e no ōyō [in Japanese]
Bibliographic information 1 Jan. 1992, Vol.13, No.1, p.49-55. Illus. 13 ref.
Abstract A new passive dosimeter tube, similar to a detector tube, consists of a glass tube of 5mm inside diameter, porous plastic plugs through which gases can diffuse into the tube and a detecting reagent filling the glass tube. A porous plastic rod of the same length as that of the packed bed of detecting reagent fills part of the glass tube. The test results for carbon monoxide passive dosimeter tubes conformed fairly closely with Fick's first law of diffusion. The stain length was related to the exposure time and concentration. Also, the stain length was proportional to the square root of the ratio of the cross-sectional area of the porous plastic rod and the whole glass tube. To obtain accuracy within 25%, the necessary exposure time was 30min for concentrations >50ppm and longer than 60min for lower concentrations. Carbon monoxide passive dosimeter tubes are applicable to measurements of relatively short exposure (around 1h).
Descriptors (primary) passive dosimeters; carbon monoxide
Descriptors (secondary) description of equipment
Document type D - Periodical articles
Country / State or ProvinceJapan
Subject(s) Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Carbon monoxide
Inorganic substances