Ƙididdigar gurɓata iska
 Ƙididdigar gurɓata iska |
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Matsakaicin gurɓataccen iska, kamar yadda aka auna ko kuma kamar yadda aka lissafa ta hanyar ƙirar watsa iska, dole ne a sauya shi ko gyara shi don a bayyana shi kamar yadda ake buƙata ta hanyar ka'idojin da hukumomin gwamnati daban-daban suka bayar. Dokokin da ke bayyanawa da iyakance yawan gurɓataccen abu a cikin iska ko a cikin hayaki zuwa iska ta muhalli ana bayar da su ta hanyar Kare muhalli na kasa da na jihohi (ko na lardin) da hukumomin kiwon lafiya da tsaro na sana'a.
Irin waɗannan ƙa'idodi sun haɗa da maganganu daban-daban na mai da hankali. Wasu suna bayyana maida hankali a matsayin ppmv (kashi na miliyan ta hanyar girma) kuma wasu suna bayyana ma'auni a matsayin MG / M3 (milligrams a kowace mita cubic), yayin da wasu ke buƙatar daidaitawa ko gyara maida hankali don yin la'akari da yanayin yanayin danshi, abun ciki na oxygen ko abun ciki na carbon dioxide. Wannan labarin ya gabatar da hanyoyin da za a iya jujjuya maida hankali daga ppmv zuwa MG / M3 (kuma akasin haka) da kuma gyara maida hankali ga yanayin da ake buƙata.