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采用呼吸性粉尘与总粉尘同步采样对照监测的方法，计算出陶瓷生产各工种两种粉尘浓度的比值，从而将历年的总粉尘浓度换算为呼吸性粉尘浓度。用焦磷酸重量法测得陶瓷粉尘中游离ＳｉＯ＿２含量为２９．１％；并用寿命表法分析呼吸性粉尘接触量与尘肺的剂量反应关系。由此推算出若按工人一生工作３０年计算，当发病率控制在１％和０．５％时，含游离ＳｉＯ＿２２９．１％的陶瓷呼吸性粉尘容许浓度应分别控制在０．５０９８ｍｇ／ｍ￣３和０．４０５９ｍｇ／ｍ￣３。本文力图为我国有关部门制订含游离ＳｉＯ＿２呼吸性粉尘浓度卫生标准提供科学依据。
Respiratory dust and total dust synchronous sampling control monitoring method to calculate the ceramic production of two kinds of dust concentration ratio of various types of work, so that the calendar year’s total dust concentration is converted to respiratory dust concentration. The content of free SiO_2 in ceramic dust was 29.1% measured by pyrophosphoric acid gravimetric method. The relationship between dose of respirable dust exposure and pneumoconiosis was analyzed by life table method. Based on this, we calculated that the permissible concentrations of ceramic respirable dusts containing free SiO_229.1% should be controlled at 0.5098mg / m ~ 2 respectively when the incidence rate is controlled at 1% and 0.5% 3 and 0.4059 mg / m ~ 3. This article seeks to provide a scientific basis for the relevant departments in our country to formulate health standards containing free SiO 2 respirable dust concentration.