|Document ID (ISN)||102403|
|ISSN - Serial title
||0003-4878 - Annals of Occupational Hygiene
|Convention or series no.
||Tossavainen A., Kotilainen M., Takahashi K., Pan G., Vanhala E.
||Amphibole fibres in Chinese chrysotile asbestos
||Mar. 2001, Vol.45, No.2, p.145-152. Illus. 36 ref.
||Ten chrysotile bulk samples originating from six Chinese chrysotile mines were studied for amphibole fibres. The asbestos fibre content in lung tissue from seven deceased workers of the Shenyang asbestos plant was also examined. The bulk samples were pretreated with acid/alkali-digestion, and thereafter, scanning and transmission electron microscopy, X-ray microanalysis, selected area electron diffraction and X-ray powder diffractometry were used to identify the minerals. The amphibole asbestos contents were between 0.002 and 0.310 w-%. Tremolite fibres were detected in every sample but anthophyllite fibres were present only in the sample originating from the dolomite-hosted deposit. In comparison, anthophyllite (71%), tremolite (9%) and chrysotile (10%) were the main fibre types in the lung tissue samples indicating faster pulmonary clearance of chrysotile fibres. The total levels ranged from 2.4 to 148.3 million fibres (over 1Ám) per gram of dry tissue, and they were consistent with heavy occupational exposure to asbestos.
||China; asbestos; chrysotile; asbestos mining; lung deposition; mineral fibres; amphibole
||fibre counts; anthophyllite; x-ray diffractometry; exposure evaluation; transmission electron microscopy; tremolite
||D - Periodical articles
|Country / State or Province||China; Finland; Japan|
||Mines and quarries
|Broad subject area(s)
Mining and quarrying