城市(shi)室(shi)外清潔空(kong)(kong)氣(qi)中(zhong)的(de) CO2濃(nong)度(du)(du)一般在(zai)0.07% 以(yi)下(即700ppm以(yi)下), CO2濃(nong)度(du)(du)在(zai)0.07~0.1%(即700-1000ppm)時為(wei)普通空(kong)(kong)氣(qi)。國(guo)家環保(bao)總(zong)局(ju)與衛(wei)生部新編的(de)于2003年3月1日起實施(shi)的(de)《室(shi)內(nei)(nei)空(kong)(kong)氣(qi)質(zhi)量(liang)標準》中(zhong)將室(shi)內(nei)(nei)空(kong)(kong)氣(qi)中(zhong)CO2濃(nong)度(du)(du)限定為(wei)≤0.1%(1000ppm)。CO2濃(nong)度(du)(du)為(wei)0.15%(1500ppm)時，人(ren)員明顯感到不舒服;當CO2濃(nong)度(du)(du)超(chao)過0.2%(2000ppm)時，室(shi)內(nei)(nei)空(kong)(kong)氣(qi)質(zhi)量(liang)明顯惡化;CO2濃(nong)度(du)(du)再上升，人(ren)員開始出現明顯的(de)頭痛等中(zhong)毒癥狀。

　　標準號：GBT 18883-2002