空气中石棉浓度的测定与矿工微核率关系的探讨

AIRBORNE ASBESTOS DUST DETERMINATION AND VTHEV MICRONUCLEUS CHANGES IN WORKERS

石棉为诱变物,应用计重法和计数法,测定朝阳新生石棉矿10个车间空气中石棉尘浓度及矿工末梢血淋巴细胞微核率。结果得出:两种方法测得值无相关性。矿工血微核率的增加与计数法石棉纤维数值相关显著,与工龄成正比,与计重法无关。说明计重法不能代替计数法,只有计数法才能真正反映石棉的致病作用。

The simultaneous measurements with both gravimetric and fibre counting methods for airborne asbestos dust concentration were carried out in 10 workplaces in Chaoyang Xinsheng asbestos mine. Capillary blood micronucleated cells in asbestos workers were determined at the same time. Result showed that a rise in mieronucleated cells could be seen in workers and it was in direct proportion to the asbestos fibre concentration determined by fibre counting method, and it was found that the micronucleus changes was significantly correlated with the length of service of workers. But there was no relationship between the gravimetric and the fibre counting methods. It suggests that asbestos fibre counting can reveal the pathogenic effect of asbestos dust.