dlming 加入本网站时间 Member Since 08 December 2011 Dlming's 评论 comments 作者不太象真正的专家，有危言耸听的嫌疑 有很多常识性的问题： １.每个国家都是根据自己的发展阶段和实际情况来制订空气质量标准。因此，ＷＨＯ提出了指导值和不同的阶段目标，各国根据自己可达的目标来制订自己的空气质量标准。 ２.许多国际研究表明，PM2.5与PM10之间的比例关系在50%左右，因此WHO在制订其空气质量指导值的时候，PM2.5取值为PM10值的一半。不知道北京的PM2.5占PM10的85%这个数值是怎么得来的。作者自己做过研究吗？ 不知道作者是怎么研究中国空气污染的，自己做过实验吗？那个数据是自己得来的?东平西凑的数据可不能用来下结论的啊。 The author does not appear to be a real expert, and I have suspicions that he is simply an alarmist There are many common-sense errors: 1. Previously, air quality standards have always been drafted on the basis of the level of development and the real situation in each country. As a result, the WHO has given guidance indices for different stages of development, and each country can draft their own air quality standards based on the aims they can achieve. 2. Research in many countries has shown that the proportional relationship between PM2.5 and PM10 is around 50%, so the WHO has defined the value of PM2.5 as half of PM10 when drawing up air quality guidance indices. Has has the author done research on his own? I don't know how the author researched air pollution in China- has he carried out his own tests? That data has been obtained by himself? Information with no basis can't be used to draw conclusions.