既往已有许多研究指出,接触同一浓度污染物的人群,他们所发生的健康效应并非每个人或每种人都相同,而是有的人或一群人表现得特别敏感。过去在回答这个问题时是比较模糊的,但是近几年来,新的研究成果提出高危险人群的概念,使这个问题得到了解释,并且达一概念在制订环境卫生标准中得到了实际应用。 Previous studies have shown that the health effects of exposure to the same concentration of pollutants are not the same for every person or every person but rather that some people or groups of people are particularly sensitive. In the past, the answer to this question was ambiguous. However, in recent years, new research findings have raised the concept of high-risk groups, helped to explain this issue, and reached the concept of practical application in the development of environmental health standards.