Air quality and control of air pollution

Problem onečišćenja zraka javlja se pojavom industrije jer ljudska aktivnost u ranijoj povijesti nije značajno utjecala na zagađenje zraka. Čovjek je, razvojem gospodarstva u svrhu porasta životnog standarda nenamjerno, promijenio i poremetio izmjene tvari u okolišu kako s promjenom njihovih koncentracija u svim njegovim sastavnicama, tako i tvorbom novih nepoznatih spojeva koji se akumuliraju u okolišu i uzrokuju onečišćenje. Onečišćenje prirode i okoliša je svako unošenje štetnih tvari i energije koje narušava prirodni sklad vode, zraka i tla. Onečišćenje zraka može biti lokalno i globalno. Lokalno onečišćenje je vezano uz gradove i industrijska područja dok je globalno vezano za onečišćenje zraka u potpunosti. Glavni onečišćivači zraka su razni plinovi koji nastaju izgaranjem fosilnih goriva te erupcije vulkana kao glavni predstavnik prirodnog onečišćenja zraka.The problem of air pollution appears by industrial development because human activity had no significant influence on pollution in earlier history. In order to increase their life standard, people have developed economic activities, but along that way they also, unintentionally, changed and disturbed the environment by changing concentration of matter in all its components and also by making new, unknown chemical compounds, which tended to accumulate in the environment causing pollution. Pollution of the environment can be defined as an intake of all harming matters and energy which disturbs the natural harmony of water, air and soil. The air pollution can be local and global. Local pollution is connected to cities and industrial areas, while global pollution is connected to overall air pollution. The main air pollution comes from gases, which are produced by combustion of fossil fuels and vulcano eruptions which represent the main natural air pollutions