Iyini imiphumela yezitshalo zasendlini?
Context:Izitshalo zasendlini azinawo umthelela obonakalayo ekugxileni kwama-VOC ezindaweni ezijwayelekile zasekhaya: kungadinga phakathi kwezitshalo zasendlini eziyi-10 kuya kweziyi-1000 ngemitha eyisikwele ukufeza izinga elifanayo lokususa i-VOC njengoba kwenzeka ngokushintshaniswa kokungenayo phakathi komoya ongaphandle nowangaphakathi.  Umbono wokuthi izitshalo zasendlini zinomthelela obonakalayo ekhwalithi yomoya wasendlini usekelwe ngokuyinhloko ocwaningweni lwe-Clean Air olwenziwa i-NASA ngawo-1980. Lolu cwaningo lwahlola izitshalo ezisemagumbini avaliwe futhi ezinamazinga aphakeme kakhulu enhlanganisela ye-organic evuthayo (ikakhulukazi i-benzene, i-trichloroethylene ne-formaldehyde). Yaphetha ngokuthi uma izitshalo zasendlini zithuthukisa izinga lomoya, indlela ezisebenza ngayo yizinambuzane ezisemhlabathini, hhayi izitshalo ngokwazo.  Izitshalo zasendlini zinomthelela obalulekile ngokwezibalo ekuhlanganisweni kwe-carbon monoxide ne-carbon dioxide ezindaweni ezivamile zasendlini, zinciphisa amazinga e-carbon dioxide ngo-10-25% namazinga e-carbon monoxide ngo-90%. Lo mphumela uye waphenywa yi - NASA ukuze usetshenziswe emikhumbi - mkhathi.  Kubonakala sengathi izitshalo zandisa inani nezinhlobonhlobo zamagciwane emakhaya, kuyilapho zinciphisa ukuhlukahluka kwezikhunta. Zivame ukwandisa umswakama, zinciphise ukushintshashintsha kwezinga lokushisa, futhi zinciphise umsindo.  Kuthiwa kunezinzuzo eziningi ezingokwengqondo nezingokomzimba zokutshala izitshalo zasendlini. Ukubuyekezwa okubucayi kwezincwadi zokuhlola kwaphetha ngokuthi Ucwaningo olubukeziwe lubonisa ukuthi izitshalo zasendlini zinganikeza izinzuzo ezingokwengqondo njengokunciphisa ukucindezeleka nokwandisa ukubekezelela ubuhlungu. Nokho, babonisa ukungafani okukhulu kwezindlela nemiphumela. Ngakho-ke sinokungabaza okukhulu ngokuphathelene nezinsolo ezivamile zokuthi izitshalo zasendlini zibangela izinguquko ezingokwengqondo ezizuzisayo. Kubonakala sengathi izinzuzo zixhomeke ezicini zesimo lapho kutholakala khona izitshalo zasendlini nasezici zabantu abahlangabezana nazo. "
Kuthiwa kunezinzuzo eziningi ezingokwengqondo nezingokomzimba zokutshala izitshalo zasendlini. Izitshalo zasendlini zinomphumela obalulekile ngokwezibalo ekuhlanganisweni kwe-carbon monoxide ne-carbon dioxide ezindaweni ezivamile zasendlini. Izitshalo nazo zibonakala zandisa inani nezinhlobonhlobo zamagciwane emakhaya, kuyilapho zinciphisa ukuhlukahluka kwamakhowe. Zithambekele ekwandiseni umswakama, zinciphise ukushintshashintsha kwamazinga okushisa, futhi zinciphise umsindo. Kuthiwa kunezinzuzo eziningi ezingokwengqondo nezingokomzimba zokutshala izitshalo zasendlini. Izitshalo zasendlini zinganikeza izinzuzo ezingokwengqondo njengokunciphisa ukucindezeleka nokwandisa ukubekezelela ubuhlungu.