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本文对制材、家俱、木器等15个厂的流调结果表明:木尘浓度范围0.5～180mg/m~3,几何平均浓度3.l～36.6mg/m~3。分散度<5μm者占50.6～84.2%。沉降尘中游离SiO_2含量为0.54～7.7％。木尘对工人的主要危害是引起鼻粘膜炎和慢性支气管炎,其检出率随着木尘浓度上升而呈增高趋势。肺通气功能测定,FVC、FEV_1、FEV_1%和MMFR均明显下降,与对照组相比,差异显著。对1383名木工进行了胸部X线摄片,发现相当于Ⅰ期尘肺改变者14例。木尘致纤维化作用不明显,能否引起木尘肺有待进一步研究。
The results of flow adjustment of 15 plants such as timber, furniture and woodworking showed that the concentration range of wood dust was 0.5 ~ 180mg / m ~ 3 and the geometric mean concentration was 3.l ~ 36.6mg / m ~ 3. Dispersion <5μm accounted for 50.6 ~ 84.2%. The content of free SiO_2 in sediment dust is 0.54 ~ 7.7%. The main hazards of wood dust to workers are nasal mucositis and chronic bronchitis. The detection rate shows an increasing trend with the increase of wood dust concentration. Pulmonary ventilation test, FVC, FEV_1, FEV_1% and MMFR were significantly decreased compared with the control group, the difference was significant. A total of 1383 carpenters underwent chest X-ray and found that there were 14 cases of stage I pneumoconiosis. Wood dust caused by fibrosis is not obvious, can cause wood pneumoconiosis yet to be further studied.