Méranger J C, Davey A B
Health and Welfare Canada, Environmental Health Directorate, Ottawa, Ontario.
IARC Sci Publ. 1989(90):347-53.
The use of asbestos in consumer products such as joint compounds and modelling clays has been banned since these products, in normal use, have the potential to produce high levels of fibrous dusts in ambient air. However, we were concerned that the asbestos fibres present in these products would be replaced by other fibrous materials. X-ray diffraction and transmission electron microscopy analyses were performed to identify the crystalline components, including mineral fibres, in a selection of 45 samples. Using quantitative X-ray diffractometry, it was established that the fibrous content of several consumer products was in the range of 1-5%. The widespread use of attapulgite in cat litters, joint and spackling compounds and to a lesser extent in art supplies was confirmed. It was also shown that the attapulgite fibres detected were generally in the same size range as chrysotile, with diameters of 0.03-0.5 microns and lengths up to 4 microns.
自消费产品（如填缝料和造型黏土）中的石棉使用被禁止以来，因为这些产品在正常使用过程中有可能在环境空气中产生高浓度的纤维粉尘。然而，我们担心这些产品中存在的石棉纤维会被其他纤维材料替代。对45个样本进行了X射线衍射和透射电子显微镜分析，以识别包括矿物纤维在内的晶体成分。通过定量X射线衍射法确定，几种消费产品的纤维含量在1%-5%范围内。证实了凹凸棒石在猫砂、填缝料和艺术用品中的广泛使用，程度较轻。还表明，检测到的凹凸棒石纤维通常与温石棉处于相同尺寸范围，直径为0.03-0.5微米，长度可达4微米。
