Izithasiselo ze-UV, ezaziwa nangokuthi izihlungi ze-UV noma ama-sunscreen, ziyizinto ezisetshenziswa ukuvikela izinto ezahlukahlukene emiphumeleni eyingozi yemisebe ye-ultraviolet (UV). Esinye sezithasiselo ze-UV ezinjalo yi-UV234, okuyindlela ethandwayo yokunikeza isivikelo emisebeni ye-UV. Kulesi sihloko sizohlola uhla lwezithasiselo ze-UV futhi sihlole izakhiwo ezithile kanye nokusetshenziswa kwe-UV234.

Uhlu lwezinciphisi ze-UV luhlanganisa uhla olubanzi lwezinciphisi eziklanyelwe ukumunca nokususa imisebe ye-UV. Lawa manciphisi avame ukusetshenziswa emikhiqizweni efana ne-sunscreen, ipulasitiki, upende kanye nezindwangu ukuvimbela ukuwohloka kanye nomonakalo obangelwa ukuchayeka ku-UV. Izinciphisi ze-UV zisebenza ngokumunca imisebe ye-UV futhi ziyiguqule ibe ukushisa okungenangozi, ngaleyo ndlela zivikele izinto emiphumeleni eyingozi yemisebe ye-UV.

Izifutho ze-UV zihlukaniswe ngezigaba ezahlukene ngokusekelwe esakhiweni sazo samakhemikhali kanye nendlela yokusebenza. Ezinye izinhlobo ezivamile zezifutho ze-UV zifaka phakathi ama-benzophenones, ama-benzotriazoles, nama-triazines. Uhlobo ngalunye lwesifutho se-UV lunezinzuzo ezithile futhi lufanelekela ukusetshenziswa okuhlukile. Isibonelo, i-UV234 iyisifutho se-UV se-benzotriazole esisetshenziswa kabanzi ezimbonini ezahlukene ngenxa yezakhiwo zayo ezinhle kakhulu zokuvikela i-UV.

I-UV234 yaziwa ngokusebenza kwayo okuphezulu ekumunceni imisebe ye-ultraviolet, ikakhulukazi kububanzi be-UVB kanye ne-UVA. Lokhu kuyenza ibe yindawo ekahle yokuhlinzeka ngokuvikelwa kwemisebe ye-UV ebanzi. I-UV234 ivame ukusetshenziswa ekwakhiweni kwe-sunscreen ukuthuthukisa amakhono okuvikela i-UV omkhiqizo. Ngaphezu kwalokho, isetshenziswa kumapulasitiki nasezimbozweni ukuvimbela ukubola kwe-photogradation nokugcina ubuqotho bento lapho ivezwa elangeni.

Ukusetshenziswa kweUV234akugcini nje ngokuvikela ilanga kanye nezingubo zokuvikela. Iphinde isetshenziswe embonini yendwangu ukuze inikeze ukumelana kwe-UV ezindwangu kanye nemicu. Ngokufaka i-UV234 ezindwangu, abakhiqizi bangandisa ukuqina nokuphila isikhathi eside kwezinto, okwenza zifanele ukusetshenziswa ngaphandle lapho ukuchayeka emisebeni ye-UV kungenakugwenywa.

Ngaphezu kwezakhiwo zayo ezimunca i-UV, i-UV234 yaziwa nangokuzinza kwayo ekukhanyeni kwelanga, okuqinisekisa ukuthi ihlala isebenza ngisho nangemva kokuchayeka isikhathi eside elangeni. Lesi sici sibalulekile ekugcineni ukusebenza kwemikhiqizo equkethe i-UV234, njengoba iqinisekisa ukuvikelwa okuhlala isikhathi eside emisebeni ye-UV.

Uma ucabangela izinhlobo ezahlukene zezinciphisi ze-UV, kubalulekile ukuqonda izidingo ezithile zokusetshenziswa kanye nezinga lokuvikelwa kwe-UV elidingekayo. Izinciphisi ze-UV ezahlukene zinikeza amazinga ahlukahlukene okuvikelwa kwe-UV kanye nokuhambisana nezinto ezahlukene. Ngakho-ke, kubalulekile ukukhetha ezifaneleIsifutho se-UVngokusekelwe ekusetshenzisweni okuhlosiwe kanye nezakhiwo ezithile zezinto ezivikelwe.

Ngamafuphi, izifutho ze-UV zidlala indima ebalulekile ekuvikeleni izinto ekulimaleni kwemisebe ye-UV. I-UV234 iyisifutho se-UV se-benzotriazole esisetshenziswa kabanzi ngenxa yezakhiwo zayo ezinhle kakhulu zokuvikela i-UV kanye nokuzinza kwesithombe. Ukuqonda ububanzi bezifutho ze-UV kanye nezakhiwo zazo ezithile kubalulekile ekukhetheni isifutho se-UV esifanele kakhulu sokusetshenziswa okuthile. Kungakhathaliseki ukuthi kusezinhlayiyeni zelanga, epulasitikini, ezimbozweni noma ezindwangu, izifutho ze-UV ezifana ne-UV234 zinikeza isivikelo esithembekile emisebeni ye-UV, esiza ukwandisa isikhathi eside nokusebenza kwezinto ezahlukahlukene.