Mitigati?n ?trat?gi?? and ??luti?n?
Environmental Science
SCI/275
Mrs. Salti Khan
May 23, 2010
IN?RODUC?ION
??id rain i? a w?rd g?n?rally u??d t? d?n?t? ??v?ral pr??????? thr?ugh whi?h human-g?n?rat?d p?llutant? augm?nt l?v?l? ?f a?idity in th? ?nvir?nm?nt. ?h? pr?bl?m ???ur? wh?n p?llutant? f?r ?xampl? ?ulfur di?xid? and nitr?g?n ?xid?? ar? r?l?a??d int? th? automated teller machine??ph?r?, mainly fr?m p?w?r plant?, m?tal ?m?lt?r?, fa?t?ri?? a? w?ll a? m?t?riz?d v?hi?l??. ??m? ?f th??? p?llutant?, whi?h ar? r???gniz?d a? pr??ur??r? ?f a?id d?p??iti?n, promptly pr??ipitat? t? th? ?arth in a ironical f?rm n?ar th?ir ??ur??, wh?r? th?y ??mbin? with ?urfa?? m?i?tur? t? f?rm a?idi? ??luti?n?. Und?r ??rtain ??nditi?n?, th?ugh, th??? p?llutant? ?tay in th? atm??ph?r? f?r p?ri?d? ?f up t? ??v?ral day?, during whi?h th?y may b? ?arri?d by wind ??ur??? ?v?r ?ub?tantial di?tan???.
Wh?r?a? in th? atm??ph?r?, th? p?llutant? may und?rg? a multifa??t?d ??ri?? ?f ?h?mi?al r?a?ti?n? in th? pr???n?? ?f ?unlight and ?th?r ga???, f?r in?tan?? amm?nia and l?w-l?v?l ?z?n?, whi?h ar? a? w?ll g?n?rat?d by human a?tiviti??. ?h? ?n?uing ?h?mi?al? may b? ab??rb?d by wat?r vap?r t? f?rm tiny dr?pl?t? ?f ?ulfuri? and nitri? a?id? that ar? wa?h?d ?ut ?f th? atm??ph?r? in th? f?rm ?f rain, ?n?w, mi?t ?r f?g. (Mi?ha?l ?llaby, 2000)
??id rain wa? m??tly a l??aliz?d pr?bl?m ?l??? t? th? ??ur?? ?f th? p?llutant? until w?ll int? th? 20th ??ntury. ?h? pr?bl?m b??am? m?r? and m?r? r?gi?nal a? g?v?rnm?nt? ?tart?d mandating tall?r ?m?k??ta?k? t? ??att?r p?llutant? m?r? ?xt?n?iv?ly a? a plan f?r r?li?ving l??al disseminate p?lluti?n pr?bl?m?. ?t fir?t, it wa? th?ught th? p?llutant? w?uld b???m? ?? dilut?d a? th?y w?r? di?p?r??d that th?y w?uld pr?t?n?? n? furth?r pr?bl?m?. By th? 1960?, th?ugh, it had b???m? ?bvi?u? that an in?r?a?ingly ??v?r? ??nditi?n ?f a?idifi?ati?n in...
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