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Document ID (ISN)102403
CIS number 03-1296
ISSN - Serial title 0003-4878 - Annals of Occupational Hygiene
Year 2001
Convention or series no.
Author(s) Tossavainen A., Kotilainen M., Takahashi K., Pan G., Vanhala E.
Title Amphibole fibres in Chinese chrysotile asbestos
Bibliographic information Mar. 2001, Vol.45, No.2, p.145-152. Illus. 36 ref.
Abstract 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.
Descriptors (primary) China; asbestos; chrysotile; asbestos mining; lung deposition; mineral fibres; amphibole
Descriptors (secondary) fibre counts; anthophyllite; x-ray diffractometry; exposure evaluation; transmission electron microscopy; tremolite
Document type D - Periodical articles
Country / State or ProvinceChina; Finland; Japan
Subject(s) Mines and quarries
Broad subject area(s) Chemical safety
Browse category(ies) Asbestos
Mining and quarrying