Are Nanoparticles Safe? Uye Nei vari muChikuto changu cheScreen?
Iwe wakasarudza kuti kushandisa sachigaro chezuva rezuva ndiro chisarudzo chakanaka kwauri. Zvichida unonzwa sokuti sarudzo yakanaka kwauri iwe nemhepo, kana zuva rakasvibirira rine maitiro ekugadzirisa zvinokanganisa ganda rako re-oh-so-sensitive.
Ipapo unonzwa nezve "nanoparticles" mune mamwe masikati machena, pamwe chete nemamwe mashoko anotyisa uye anokakavadzana pamusoro pezvikamu zvinokupa pause.
Kunyanya, kusarudza chiedza chezuva chezuva chinofanira kunge chichivhiringidza here?
Neine ruzivo rwakanyanya kunze uko, rungaratidzika rukuru. Saka, ngatitangei kupfurikidza nomubvumo uye tora kutarisa kusingafungi nanoparticles mu sunscreen, kuchengeteka kwavo, zvikonzero nei iwe uchizovada muzuva rako rekrini uye apo usingadi.
Chii Chinopa Nanoparticles?
Nanoparticles zvinhu zvinoshamisa zvikuru zviduku zvezvinhu zvakapiwa. Nanoparticles vasingapfuuri zana nanometer yakareba. Kupa imwe maonero, nanometer inopetwa ka1000 pane zvakasvibirira zveganda rimwe remvere.
Kunyange zvazvo nanoparticles inogona kunge yakasikwa zvakasikwa, sezvinongoita madonhwe emadonhwe egungwa spray somuenzaniso, ma nanoparticles akawanda anogadzirwa mubhuku. Nokuda kwezuva, iyo nanoparticles inobvunza ndeye zinc oxide uye titanium dioxide. Izvi zvinoshandiswa zvakaputsika mukati ma-ultra-fine particles vasati vawedzerwa kuzuva rako.
Nanoparticles yakatanga kuwanika mu sunscreens muma1980, asi haina kubata kusvika kusvikira kuma1990.
Nhasi, iwe unogona kutora sunscreen yako yezuva ne zinc oxide uye / kana titanium dioxide iyo nano-yakasanganiswa nhatu kunze kwekutsanangurwa zvimwe.
Izwi rokuti "nano" uye "micronized" rakafanana. Saka, kubereka kwezuva nezuva "micronized zinc oxide" kana "micronized titanium dioxide" rakanyorwa rine nanoparticles.
Nanoparticles haisi kungowanikwa mu sunscreens.
Kuchengetwa kweganda akawanda uye zvigadzirwa zvemucheka, semheyo, shampoos, uye mazino, zvinowanzo zvine micronised ingredients. Nanoparticles inoshandiswawo mumagetsi, zvishongo, zvisingagadziki girazi, nezvimwewo.
Nanoparticles Chengetedza Mazuva Akasviba Masikati Kubva Pakusiya Moto Wemavara Pamusoro Peganda Rako
Paunosarudza bhenekeri rako rezuva, une zvingasarudzwa zviviri; avo vane nanoparticles uye avo vasina. Misiyano iri pakati peiviri icharatidza pamusoro peganda rako.
Zvose titanium dioxide uye zinc oxide zvinogamuchirwa neRDA sezuva rekudzivirira zuva . Mumwe nomumwe anopa kudzivirira kwekudzivirira, kunyange zvazvo titanium dioxide inoshanda zvakanaka kana ichibatanidzwa ne zinc oxide kana chimwe chigadzirwa chezuva chinopisa.
Zinc oxide uye titanium dioxide inoshanda nekuratidzira mazai eV kure neganda, kudzivirira ganda kubva zuva. Uye ivo vanobudirira chaizvo.
Muitiro wavo wenguva dzose, kwete-nano yakakura, zinc oxide uye titanium dioxide yakachena chaizvo. Kana ichinyorwa mu sunshcreen, ivo vachasiya firimu yakajeka yepepachena paganda. Funga nezvehupenyu hunofanirwa nehupenyu hwakachena nemuchena pane bhiriji remhino-yep, iyo zinc oxide.
Pinda nanoparticles. Girasi yezuva rinogadzirwa ne micronised zinc oxide uye titanium dioxide rub mukati meganda zvakanyanya kunaka, uye haazosiyi kumashure.
I-ultra-fine nanoparticles inoita kuti sunscreen isanyanya opaque asi inoshanda.
Izvo Zvakawanda Zvikuru Zvokutsvakurudza Zvinowana Nanoparticles muSuscreen Safe
Kubva pane zvatinoziva iye zvino, hazviratidzi kuti nanoparticles ye zinc oxide kana titanium dioxide inokuvadza chero ipi zvayo. Zvisinei, kwenguva yakareba migumisiro yekushandisa micronized zinc oxide uye titanium dioxide, inongova yakavanzika. Mune mamwe mazwi, hapana humwe uchapupu hwokuti kushandiswa kwenguva refu kwakachengeteka zvakakwana, asi hapana humwe uchapupu hunokuvadza kana.
Vamwe vakabvunza kuchengetedzwa kwezvikamu zviduku zvakasikwa. Nemhaka yokuti ivo vaduku zvikuru, vanogona kubatwa neganda uye mumuviri.
Zvakawanda sei uye zvinopindira zvakadzama sei zvichienderana nekuti zviduku zinc oxide kana titanium dioxide particles ndezvipi, uye kuti dzinopihwa sei.
Nekukarova, chii chinoitika kumuviri wako kana zinc oxide kana titanium dioxide nano-particles yakanyanyiswa? Zvinosuruvarisa, hapana mhinduro yakajeka-yekuti, zvimwe.
Pane kungofungidzira kuti vanogona kusimbisa uye kukuvadza masero emuviri wedu, kukurumidza kukwegura mukati nekunze. Asi zvimwe zvitsvakurudzo zvinoda kuitwa kuti uzive zvakananga imwe nzira kana imwe.
Titanium dioxide, iyo inenge yakasvibiswa uye yakanyongedzerwa , yakaratidzwa kuti inokonzera kenza yemapapu mumarangi emakonzo. Micronized titanium dioxide inopindawo mukati meganda zvikuru kwazvo kupfuura micronized zinc oxide, uye titanium dioxide yakaratidzwa kupfuura nepasecenta uye bhiriji ropa reuropi.
Yeuka, zvakadaro, kuti zvizhinji zvemashoko aya zvinobva pakudya titanium dioxide (sezvo inowanikwa mune zvakawanda zvekudya zvakagadzirwa kare uye sweets). Kubva pane dzakawanda zvidzidzo zvepamusoro-shandiswa dzakashandiswa micronised titanium dioxide uye zinc oxide, nguva nenguva pane izvozvi zvigadzirwa zvinowanikwa muganda, uye kunyange zvakadaro ivo vakanga vari muhombe yakanyanya.
Izvozvo zvinoreva kuti kunyange kana iwe ukashandisa sunscreen ine nanoparticles, inogona kunge isingatori kunyange yepakutanga kweganda. Nhamba yakabatanidzwa yakasiyana zvikuru zvichienderana nekuumbwa kwezuva, uye zvizhinji zvaro hazvinganyanyi kunyanya kana zvachose.
Tine ruzivo rwandinayo iye zvino, shisa yezuva ine nanoparticles inoratidzika se yakachengeteka uye inoshanda zvikuru. Zvishoma zvishoma zvakajeka kushandiswa kwenguva refu kwechigadzirwa kunogona kuva nehutano hwako, kunyanya kana uri kushandisa chigadzirwa zuva nezuva. Zvakare, hapana humwe uchapupu hwokuti kushandiswa kwenguva yakareba kwe micronised zinc oxide kana titanium dioxide inokuvadza, hatizivi kuti zvinokonzerwa nei (kana pane) paganda rako kana mumuviri wako.
Shoko Rinobva
Chokutanga, rangarirai kuti kupfeka zuva nezuva zuva rimwe nerimwe ndechimwe chezvinhu zvakanakisisa zvaunogona kuita kwehutano hwenguva refu yeganda rako (uye ndiyo nzira yakanakisa yekukwegura yekare). Saka, kudos kwauri kuti uite zvakanaka mukudzivirira ganda rako!
Kune zvakawanda zvakasikwa zvezuva zvakasviba, zvinosanganisira nano uye zvisingaiti nano, pane chokwadi chinhu chinobva kunze kwako. Kushandisa sunscreen ne micronized (AKA nano-particle) zinc oxide kana titanium dioxide ichakupa chigadzirwa chisingasviki uye chakanyanyisa zvakakwana.
Kana iwe unofunga nezve nano-particles, uchishandisa shisi yezuva isiri micronta ichakupa hukuru hwakawanda husingawanikwi neganda rako. Basa rekutsvaga iwe unotarisa firimu jena paganda rako mushure mekushanda.
Imwe nzira kana iwe unonetseka ndeyekudzivisa micronized titanium dioxide zvigadzirwa zvachose, sezvo ichi chigadziro ndicho icho chave chakabatanidzwa kune zvinogona kuitika matambudziko. Yeuka, zvisinei, kuti dzakawanda zvezvinetso izvi zvakabva mukugunun'una kana kuvhara titanium dioxide nanoparticles, uye kwete kubva pakuchengetwa kweganda.
Chisikiti chezuva, zvose micronised uye kwete, zvinokonzera zvakanyanya mukusangana kwavo uye zvinonzwa paganda. Saka, kana rimwe ruvara rusiri rwekuda kwako, edza imwe kusvikira iwe uwane iyo inoshanda kwauri .
> Sources:
> Grande F, Tucci P. "Titanium Dioxide Nanoparticles: A Ngozi Yehutano Hwevanhu?" Mini Ongororo mu Medicine Chemistry. 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. "Kuita Titanium Dioxide uye Zinc Oxide Nanoparticles muSunscreen Spray." 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, Sobhanmanesh F, Greenoak G, et. al. "Kugara kwenguva yakareba kune zvemashizha zvinowanikwa mune zvebhizimisi zvine nanoparticles ye TiO2 uye ZnO hazvina kuratidza kuti hazvina kukonzerwa nehutachiona mumusero usina bvudzi wemufananidzo." Particle uye Fiber Toxicology. 2016 Aug 17; 13 (1): 44. https://particleandfibretoxicology.biomedcentral.com/articles/10.1186/s12989-016-0154-4
> Skotarczak K, Osmola-Mańkowska A, Lodyga M, Polańska A, Mazur M, Adamski Z. "Photoprotection: Facts and Controversies." Yurope Ongororo yeMedical and Pharmacological Sciences . 2015 Jan; 19 (1): 98-112. http://www.europeanreview.org/article/8343