CHRYSOTILE FIBER COUNT IN ASBESTOS-CEMENT BOARD PLANTS

DOI Web Site Web Site

Bibliographic Information

Other Title
  • 石綿セメント板作業場の気中石綿繊維の測定
  • セキメン セメントバン サギョウバ ノ キチュウ セキメン センイ ノ ソクテ

Search this article

Description

An asbestos fiber counting trial has been conducted in 19 asbestos-cement board plants through-out Japan, based on the phase-contrast microscopic count on membrane filter samples. In the four working places, i.e., bag carrying-in, bag opening, board cutting and shipping, airborne chrysotile fiber counts in 1 cm3 of air, the geometric mean and standard deviation were 1.86(1.73), 3.87(3.01), 2.34(2.59) and 1.26(2.17) respectively. Mean size distribution (geometrical length) of the fiber in bag opening and board cutting were 8.91μm (σg 2.88) and 5.51μm (σg 1.22) respectively by measuring on the magnified photomicrographs. As the clearing agent of filters, dimethyl phthalate with diethyl oxalate containing dissolved filter material was used.

Journal

  • Sangyo Igaku

    Sangyo Igaku 21 (5), 417-421, 1979

    Japan Society for Occupational Health

Keywords

Details 詳細情報について

Report a problem

Back to top