Isayensi ngemuva kwe-vaping

Ogwayi be-elekthronikhi, njengohlelo olusha lokulethwa kwe-nicotine, basebenza ngomgomo oyinhloko wokuguqula isixazululo se-nicotine esiwuketshezi sibe i-aerosol ukuze sihogele ngobuchwepheshe bokushisa ugesi. Idivayisi ngokuyinhloko iqukethe izingxenye ezintathu: ibhethri, i-atomizer, nekhatriji equkethe i-nicotine ewuketshezi, into yokushisisa ku-atomizer okuyingxenye ebaluleke kakhulu. Lapho umsebenzisi ehogela, inzwa yokugeleza komoya yenza ibhethri lisebenze, ishisise ngokushesha into emazingeni okushisa aphakathi kuka-100-300 degree. Lokhu kuhwashisa ngokushesha ikhambi le-nicotine eliwuketshezi libe yizinhlayiya ezincane, kwenze i-aerosol efana nentuthu kagwayi evamile. Lezi zinhlayiya ze-aerosol, ngokuvamile ezincane kune-micron engu-1 ngosayizi, zingangena ngokuqondile ku-alveoli yamaphaphu, okuvumela i-nicotine ukuthi ingene ngokushesha emgudwini wegazi ngama-alveolar capillaries. I-Nicotine ifika ebuchosheni phakathi kwemizuzwana engu-10-15 ngemva kokuhogela, ikhiqiza umuzwa ofana nokubhema.

Ngokwekhemikhali, i-e-uketshezi ngokuyinhloko iqukethe i-nicotine, i-propylene glycol, i-glycerin, kanye{1}}nezinongo zebanga lokudla. INicotine, njengesithako esiluthayo, itholakala ngokugxila okuhlukahlukene okuklanyelwe okuthandwa ngabasebenzisi. I-Propylene glycol ne-glycerin zisebenza njengezincibilikisi nama-humectants, akugcini nje ngokusiza ukwakheka kwe-aerosol ezinzile kodwa futhi kudala umuzwa "wokushaya emphinjeni" ofana nogwayi wendabuko. Izinambitheka-zezinga lokudla zilingisa izithelo ezihlukahlukene noma ukunambitheka okumnandi, kunciphisa kakhulu ukubaba kukagwayi futhi kwenze-ugwayi ukhange ikakhulukazi entsheni. Kuyaphawuleka ukuthi e{8}}amazinga okushisa okushisisa ugwayi (100-300℃) aphansi kakhulu kunamazinga okushisa okuvutha kagwayi wendabuko (600-800℃), ngaleyo ndlela agwema ukukhiqizwa kwezinto eziyingozi njengetiyela ne-carbon monoxide. Nokho, lokhu kuphakamisa nokukhathazeka mayelana nokukhiqizwa kwamakhemikhali amasha angaziwa.

Mayelana nemithelela yezempilo, imiphumela esheshayo ohlelweni lokuphefumula ihlanganisa ukucikeka kolwelwesi lwamafinyila, okuholela ekukhwehleleni noma ekubambeni kwe-bronchi, kuyilapho{0}}ukusebenzisa isikhathi eside kungase kubangele ukuvuvukala kwendlela yokuphefumula kanye nokuncipha kokusebenza kwamaphaphu. Ukulutha kweNicotine kuveza enye inkinga ebucayi, eshintsha ibhalansi yama-neurotransmitters ebuchosheni futhi ibangele izimpawu zokuhoxa njengokuphazamiseka nokukhathazeka. Le ndlela yokulutha, efana nezidakamizwa, idala ukuncika okuqinile ngokwengqondo. Okukhathaza kakhulu ukulimala okungaba khona kwe-e{4}}kagwayi ekukhuleni kobuchopho bentsha, lapho i-nicotine ingase iphazamise ukwakheka kwe-synapse kanye nokuthuthukiswa kwe-neural circuit, kube nomthelela omubi ekusebenzeni kwengqondo namakhono okufunda. Ukwengeza,{6}}izigameko zokuqhuma kukagwayi ziyenzeka ngezikhathi ezithile, ikakhulukazi ngenxa yokushisisa ngokweqile kwamabhethri aphansi ngesikhathi sokushajwa noma ukusetshenziswa, okuholela ekwenyukeni okungazelelwe kwengcindezi yangaphakathi nokuqhuma okulandelayo. Izehlakalo ezinjalo, ezisatshalaliswa kabanzi ezinkundleni zokuxhumana, zikhulisa ukukhathazeka komphakathi mayelana{8}}nokuphepha kukagwayi. Nakuba ama-e{10}}ogwayi bebonisa isithembiso njengezinsiza zokuyeka ukubhema, imiphumela yabo yesikhathi eside{11}}yezempilo idinga ucwaningo olwengeziwe, futhi i-World Health Organization isancoma ukulawulwa okuqinile{12}}kogwayi njengezithasiselo emikhiqizweni kagwayi.