苏联早于1930年就公布了十二种化学物质的最高容许浓度,随后美国马萨诸塞州(1937年)发表了容许浓度表,1938年德国发表了二十五种溶剂的最高容许浓度表。直到目前为止,已有二十多个国家制订了容许浓度,但基本上还是沿用苏美两家的观点和数据。自1958年以来,在国际间召开过多次讨论车间容许浓度的专题会议。总的说来,在制订容许浓度的观点、原则和方法等某些方面基本趋于一致,但仍存在争论。 The Soviet Union published the maximum allowable concentration of twelve chemical substances as early as 1930, followed by the allowable concentration table published by Massachusetts (1937) in the United States. In 1938, Germany published the maximum allowable concentration table for twenty-five solvents. So far, more than 20 countries have formulated allowable concentrations, but basically they still follow the views and data of the two countries. Since 1958, there have been numerous international conferences to discuss workshop tolerances. In general, some aspects such as the viewpoints, principles and methods for setting allowable concentrations are basically the same, but there are still controversies.