|Document ID (ISN)||78431|
|ISSN - Serial title
||0003-4878 - Annals of Occupational Hygiene
|Convention or series no.
||Zhuang Z., Hearl F.J., Odencrantz J., Chen W., Chen B.T., Chen J.Q., McCawley M.A., Gao P., Soderholm S.C.
||Estimating historical respirable crystalline silica exposures for Chinese pottery workers and iron/copper, tin and tungsten miners
||Nov. 2001, Vol.45, No.8, p.631-642. Illus. 26 ref.
||The development of conversion factors and estimates of historical respirable crystalline silica exposure for Chinese workers are described. Ambient total dust concentrations and crystalline silica concentrations in bulk dust were gathered from historical industrial hygiene records. Analysis of the silica content in historical bulk samples revealed no trend from 1950 up to the present. During 1988-1989, airborne dust samples were collected in 20 metal mines and nine pottery factories in China. These data were used to establish conversion factors between respirable crystalline silica concentrations and total dust concentrations. The conversion factors were estimated to be 0.0143 for iron and copper, 0.0355 for pottery factories, 0.0429 for tin mines, and 0.0861 for tungsten mines. The relative merits of using facility-specific conversion factors, industry-wide conversion factors, or a weighted average of the two are discussed.
||China; airborne dust; metal mining; pottery industry; silica
||respirable dust; filter dust collectors; determination in air; long-term exposure; mathematical analysis; exposure evaluation
||D - Periodical articles
|Country / State or Province||China; USA|
||Dust, aerosols and related diseases
|Broad subject area(s)
||Glass, pottery and related materials
Mining and quarrying