Ingabe I-Nanoparticles Iphephile? Futhi Kungani besikrini sami se-Sunscreen?
Uke wanquma ukuthi ukusebenzisa i- sunscreen yemvelo kuyisinqumo esifanele kuwe. Mhlawumbe uzizwa kungcono ukukhetha kwakho nemvelo, noma i-sunscreen enezakhi ezisebenzayo ezicasula isikhumba sakho esibucayi.
Khona-ke uzwa "nge-nanoparticles" kwezinye izilanga zelanga zemvelo, kanye nolunye ulwazi olwesabekayo nolwokuphikisanayo mayelana nezinhlayiya ezikunika isikhashana.
Ngokujulile, ukhetha i-sunscreen yemvelo kufanele kube lokhu kudideka?
Ngolwazi oluningi kakhulu lapho, lungabonakala lunzima. Ngakho-ke, masinqume umsindo bese sibheke ngokungabonakali ama-nanoparticles e-sunscreen, ukuphepha kwawo, izizathu zokuthi uzozifunela kusikrini sakho selanga nalapho ungenakho.
Yiziphi Nanoparticles?
I-Nanoparticles yizinhlayiyana ezincane kakhulu ezivela emthonjeni onikeziwe. I-Nanoparticles ingaphansi kwe-nanometers eyi-100. Ukuze unikeze umbono othile, i-nanometer ingama-1000 izikhathi ezincane kune-thickness eyodwa yezinwele.
Ngenkathi ama-nanoparticles angadalwa ngokwemvelo, njengamaconsi amancane asolwandle, isibonelo, ama-nanoparticles amaningi adalwe ebhodini. Nge-sunscreen, ama-nanoparticles asenayo yi-zinc oxide ne-titanium dioxide. Lezi zithako zidilizwa zibe yizinhlayiya ezinama-ultra ngaphambi kokufakwa kwesikrini sakho selanga.
I-Nanoparticles yaqala ukutholakala ema-sunscreen ngawo-1980, kodwa ayizange ibambe kuze kube yi-1990.
Namuhla, ungacabangela i-sunscreen yakho yemvelo nge-zinc oxide kanye / noma i-titanium dioxide ayizinhlayiya ezincane ngaphandle uma kuchaziwe ngenye indlela.
Amagama athi "nano" nethi "micronized" afana. Ngakho, i-sunscreen ephethe "i-micronised zinc oxide" noma "i-micronized titanium dioxide" ilebula iqukethe nanoparticles.
I-nanoparticles ayitholakali nje ekushoneni kwelanga.
Ukunakekelwa kakhudlwana kwesikhumba kanye nemikhiqizo yezimonyo, njengezisekelo, ama-shampoos, kanye namazinyo, ngokuvamile ziqukethe izithako ezincane. I-Nanoparticles nayo isetshenziselwa nge-elekthronikhi, izindwangu, ingilazi engagangeki, nokuningi.
I-Nanoparticles Gcina Ama-Sunscreen Asemvelo Ngokushiya I-White Film Esikhathini Sakho
Uma ukhetha i-sunscreen yakho yemvelo, unezinketho ezimbili; labo abanama-nanoparticles nalabo abangaphandle. Umehluko phakathi kwalaba ababili uzobonakala esikhumbeni sakho.
Kokubili i-titanium dioxide ne-zinc oxide ivunyiwe yi-FDA njengezithako zemvelo zelanga . Bonke banikeza ukuvikelwa kwe-UV okubanzi, nakuba i-titanium dioxide isebenza kangcono uma ihlanganiswa ne-zinc oxide noma esinye isithako se-sunscreen yokwenziwa.
I-zinc oxide ne-titanium dioxide isebenza ngokubonisa imisebe ye-UV esikhumbeni, ivikela isikhumba elangeni. Futhi ziphumelela kakhulu.
Ngendlela yabo evamile, engeyona nano, i-zinc oxide ne-titanium dioxide imhlophe kakhulu. Uma kufakwe ebusweni belanga, bazoshiya ifilimu e-opaque ecacile ekhanda. Cabanga ngesilondolozi esinobuciko obumhlophe obumhlophe ngaphesheya kwebhuloho le-nose-yep, yi-zinc oxide.
Faka nanoparticles. I-sunscreen eyenziwe nge-oxide encane eyakhiwe i-zinc ne-titanium dioxide igubhe esikhumbeni kangcono kakhulu, futhi ngeke ishiye ukubukeka kwesidla.
I-nanoparticles emihle eyenza i-sunscreen i-opaque encane kodwa isebenza kahle.
Iningi Elikhulu Lezocwaningo Lithola Ama-Nanoparticles Esiphephile Soskrini
Kusukela kulokho esikwaziyo manje, akubonakali ukuthi ama-nanoparticles we-zinc oxide noma i-titanium dioxide ayingozi nganoma iyiphi indlela. Noma kunjalo imiphumela yesikhathi eside yokusebenzisa i-oxyde zinc micronised kanye ne-titanium dioxide, iyingcosana yemfihlakalo. Ngamanye amazwi, abukho ubufakazi bokuthi ukusetshenziswa kwesikhathi eside kuphephile ngokuphelele, kodwa abukho ubufakazi obulimazayo noma.
Abanye baye babuza ukuphepha kwalezi zinhlayiya ezincane. Ngenxa yokuthi zincane kakhulu, zingangena esikhumbeni nasemzimbeni.
Ukunciphisa okungakanani nokuthi kungena kanjani ngokujulile kuncike kangakanani ukuthi i-zinc oxide noma i-titanium dioxide izinhlayiyana ezincane kangakanani, nokuthi zinikelwa kanjani.
Ukukhahlela, kwenzekani emzimbeni wakho uma i-zinc oxide noma i-titanium dioxide i-nano-particles ixhunyiwe? Ngeshwa, asikho impendulo ecacile yalokho, noma.
Kukhona ukucabangela ukuthi bangagcizelela futhi bacekele amangqamuzana omzimba wethu, ukusheshisa ukuguga ngaphakathi nangaphandle. Kodwa ucwaningo olwengeziwe luzodingeka lwenziwe ukwazi ngokuqondile ngendlela eyodwa.
I-Titanium dioxide, lapho ifomu layo eliyimpuphu futhi ixilisiwe , iboniswe ukuthi ibangele umdlavuza wamaphaphu emagatsheni webhu. I-titanium dioxide ene-micron iphinda ingene esikhunjeni ngokujulile kune-oxygen zinc, futhi i-titanium dioxide iboniswe ukuthi idlule i-placenta nebhuloho isithiyo se-brain-brain.
Kodwa-ke, khumbula ukuthi okuningi kwalolu lwazi luvela ekungenizeni i- titanium dioxide (njengoba itholakala ekudleni okuningi namaswidi). Kusukela ezifundweni eziningi ze-titanium dioxide ne-zinc oxide esebenzisa amakhondomu, kuphela ngezikhathi ezithile lezi zithako ezitholakala esikhumbeni, futhi ngisho nangaleso sikhathi zisezingxenyeni eziphansi kakhulu.
Lokho kusho ukuthi ngisho noma usebenzisa i-sunscreen equkethe ama-nanoparticles, angase anganaki ngisho nesikhala sokuqala sesikhumba. Inani elithintekayo lihluka kakhulu kuye ngokubunjwa kwesikrini selanga, futhi iningi lalo ngeke lithinte ngokujulile uma kunjalo.
Ngolwazi esinalo njengamanje, isikrini selanga esinezinhlamvu ze-nanoparticles sibonakala siphephile futhi sisebenza kahle. Ukucaca okuncane ukuthi umphumela wesikhathi eside umkhiqizo ungaba kanjani empilweni yakho, ikakhulukazi uma usebenzisa umkhiqizo nsuku zonke. Futhi, abukho ubufakazi bokuthi ukusetshenziswa kwesikhathi eside kwe-oxygen zinc noma i-titanium dioxide enobungozi kuyingozi, asazi nje ukuthi ithini (uma likhona) elithinta isikhumba noma umzimba wakho.
Izwi elivela
Okokuqala, khumbula ukuthi ukugqoka isikrini selanga nsuku zonke kungenye yezinto ezinhle kakhulu ongayenza impilo yesikhathi eside yesikhumba sakho (futhi kuyindlela engcono kakhulu yokuguga futhi). Ngakho, kudos kuwe ngokusebenza ngokuqinile ekuvikeleni isikhumba sakho!
Kunemisindo eminingi yelanga yemvelo etholakalayo, kokubili izinketho ze-nano nezingezona okungezona, kukhona nakanjani umkhiqizo ngaphandle kwakho. Ukusebenzisa i-sunscreen nge-micazed (AKA nano-particle) i-zinc oxide noma i-titanium dioxide izokunika umkhiqizo ongekho emgqeni futhi ugaxe ngokugcwele.
Uma okukhathazekayo nge-nano-particles, ukusebenzisa i-sunscreen engeyona-micronic kuyokunika izinhlayiya ezinkulu ezingenakuthola isikhumba sakho. I-trade-off uzobona ifilimu emhlophe esikhumbeni sakho ngemuva kokusebenza.
Enye indlela uma ukhathazekile ukugwema imikhiqizo ye-titanium dioxide, ngoba lesi sithako sihlobene nezinkinga ezingenzeka. Kodwa-ke, khumbula ukuthi iningi lalezi zinkinga zivela ekungeneni noma ekuguleni i-titanium dioxide nanoparticles, hhayi ekuthwaleni isikhumba.
Isikrini selanga lesisemvelo, kokubili esikhanyiswayo futhi cha, sihluka kakhulu ngokuvumelana kwabo futhi sizizwa esikhumbeni. Ngakho-ke, uma umkhiqizo owodwa ungafani nokuthanda kwakho, zama enye uze uthole okukusebenzelayo .
> Imithombo:
> Grande F, Tucci P. "Titanium Dioxide Nanoparticles: Ingozi Yezempilo Yomuntu?" Ukubuyekezwa Kwamaminithi Emithi Yezokwelapha. 2016; 16 (9): 762-9. https://www.ncbi.nlm.nih.gov/pubmed/26996620
> Lu PJ, Cheng WL, Huang SC, Chen YP, Chou HK, Cheng HF. "Ukufanisa i-Titanium Dioxide ne-Zinc i-Oxide Nanoparticles e-Sunscreen Spray." I-International Journal of Cosmetic Science. 2015 Dec; 37 (6): 620-6. https://www.ncbi.nlm.nih.gov/pubmed/25945685
> Osmond-McLeod MJ, Oytam Y, Rowe A, uSobhanmanesh F, Greenoak G, et. al. "Ukuvezwa kwesikhashana emasimini athile atholakala ngezebhizinisi aqukethe ama-nanoparticles of TiO2 noZnO akuveze umthelela wezinto eziphilayo emfanekisweni ongenasici wegundane." I-particle ne-Fiber Toxicology. 2016 Aug 17; 13 (1): 44. https://particleandfibretoxicology.biomedcentral.com/articles/10.1186/s12989-016-0154-4
> I-Skotarczak K, i-Osmola-Mańkowska A, i-Lodyga M, i-Polańska A, i-Mazur M, i-Adamski Z. "Ukuvikela isithombe: Amaqiniso nokuphikisana." Ukubuyekezwa kweYurophu ngeSayensi Yezokwelapha Nezokwelapha . 2015 Jan; 19 (1): 98-112. http://www.europeanreview.org/article/8343