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由于在粉尘岗位作业接尘时间不同,采用粉尘算术平均浓发,不能反映出接尘水平(剂量—反应关系),而且差别十分明显。现就大连炼铁厂13个粉尘点,用算术平均浓度与时间加权浓度做一比较。一、资料来源与方法1.资料来源于20次粉尘测定的平均浓度。2.测定方法采用国家标准“作业场所空气中粉尘测定方法”。3.仪器采用武汉 FC—2型粉尘采样器。
Due to the different time of dust collection and dust collection, the arithmetic average concentration of dust can not reflect the level of dust collection (dose-response relationship), and the difference is very obvious. Dalian Iron Works is now dust point 13, with the arithmetic mean concentration and time-weighted concentration to make a comparison. First, the sources and methods 1. Data from 20 times the average concentration of dust determination. 2. Determination of the method using the national standard “workplace dust in the air Determination.” 3 instrument using Wuhan FC-2-type dust sampler.