葡京官网

French fumes

作者:糜绑敬    发布时间:2019-02-28 03:10:08    

OZONE pollution has increased dramatically in France. Last year, the environment ministry issued more than three times as many ozone alerts as in 1993. Members of the European Union must issue warnings when ozone concentrations reach 180 micrograms per cubic metre averaged over 1 hour. Last year France issued 1316 such warnings compared with 357 in 1993. One complicating factor is that the number of monitors increased from 64 in 1993 to 90 in 1994. But even so,

 

Copyright © 网站地图