nūhou

I kēia manawa, he nui nā koho a ka poʻe i ka mālama ʻili, ʻoi aku ma mua o 10 mau ʻano o nā mea hoʻohui sunscreen, akā ʻo kekahi mau huahana mālama ʻili e like me ka mālama ʻili e hōʻeha maoli i ko mākou ʻili. No laila pehea mākou e koho ai i nā huahana mālama ʻili kūpono no ko mākou ʻili? E kamaʻilio kākou e pili ana i ka benzophenone-4, kahi mea nui i nā huahana mālama ʻili.

He aha ka benzophenone-4?

Benzophenone-4He hui benzophenone ia, i kapa ʻia ʻo BP-4, ke ʻano kemika C14H12O6S. He pauka keʻokeʻo a melemele māmā paha ia i ka mahana o ka lumi a hiki ke omo pono i ka mālamalama UV o 285 a 325 Im. Ma ke ʻano he mea hoʻomoʻa ultraviolet ākea, loaʻa iā BP-4 nā pono o ka nui o ka omo ʻana, ʻaʻohe ʻawaʻawa, ʻaʻohe teratogenic, mālamalama maikaʻi a me ke kūpaʻa wela, a pēlā aku. Hiki i ka mea hoʻomoʻa UV BP-4 ke omo iā UV-A a me UV-B i ka manawa like, he papa I sunscreen i ʻae ʻia e ka United States FDA, ʻo ʻAmelika Hui Pū ʻIa a me nā ʻāina ʻEulopa he kiʻekiʻe ka hoʻohana ʻana, hoʻohana nui ʻia i ka kirīmi sunscreen a me nā mea hoʻonaninani sunscreen ʻē aʻe.

ʻO ka BP-4 hoʻoheheʻe UVʻAʻohe mea ʻawahia, ʻaʻole hiki ke lapalapa, ʻaʻole pahū, maʻalahi ke omo i ka makū i ka lewa, he hana maikaʻi loa ia o ka waikawa aqueous UV absorbent, hiki ke omo ikaika i ka mālamalama UV. Hoʻohana nui ʻia ia e like me ka mea hoʻomomona ultraviolet no nā uhi polymer wai a me ka pena poni e pale aku i ka oxidation photocatalytic o nā uhi polymer wai a me ka pena poni; He sunscreen maikaʻi ia no nā mea hoʻonani a he mea hoʻomomona UV e hoʻomaikaʻi i ke kūpaʻa o ka wā o nā lole huluhulu.

Hoʻohana nui ʻia ʻo Benzophenone i nā mea hale e like me nā aniani lā, nā ʻōpala meaʻai, nā lole holoi a me nā huahana hoʻomaʻemaʻe e pale aku i ka ʻike ʻana o UV. Hiki iā ia ke hoʻohaumia i ka wai inu a neʻe mai ka ʻōpala meaʻai i ka meaʻai. Hoʻohana ʻia ʻo Benzophenone i kekahi mau ʻīnika ʻōpala meaʻai a hiki ke neʻe i ka meaʻai. Loaʻa maoli ʻo Benzophenone i kekahi mau meaʻai (e like me nā hua waina a me nā hua Muscat) a hoʻohui ʻia i nā mea ʻē aʻe ma ke ʻano he mea ʻono.

I loko o nā huahana mālama pilikino, hoʻohana ʻia ka benzophenone ma ke ʻano he mea hoʻonui ʻala a i ʻole e pale i nā huahana e like me nā kopa mai ka nalowale ʻana o ko lākou ʻala a me ke kala ma lalo o ka mālamalama ultraviolet. ʻO nā mea i loaʻa mai Benzophenone e like me BP2 a me oxybenzone (BP3) a mebenzophenone-4 (BP-4)hoʻohana ʻia i loko o nā pale lā. Hoʻohana ʻia ʻo Oxybenzone ma ke ʻano he mea hoʻomoʻa ultraviolet a me ka mea hoʻopaʻa, ʻoi aku hoʻi i loko o nā plastics a me nā pale lā. Hoʻohana ʻia ʻo Benzophenone a me oxybenzone i ka polish kui a me ka lip balm.

He aha ka hoʻohana ʻia ʻana o ka benzophenone-4 i ka mālama ʻili?

Loaʻa i ka BP-4 UV absorbent nā pono o ka mālamalama maikaʻi a me ke kūpaʻa wela, a hoʻohana nui ʻia i ka kirīmi sunscreen, kirīmi, meli, lotion, ʻaila a me nā mea hoʻonaninani sunscreen ʻē aʻe. Kūpono loa no ka sunscreen, lotion, pena, ʻo ka nui maʻamau he 0.1-0.5%. ʻO ka nui maʻamau he 0.2-1.5%.

Mea hoʻopūʻiwa UVBP-4he maʻalahi ka hoʻoheheʻe ʻia i ka wai, a he waikawa ka hopena wai, no laila pono e hoʻopau ʻia i ka wā e hoʻohana ai. ʻO ka hopena PH ʻoi aku ma mua o 9 e hoʻemi i ka nalu omo, ʻo ka hoʻopili nui ʻana o ka sunscreen i kēlā me kēia lā a me nā huahana mālama ʻili ʻē aʻe e pale aku i ka ʻelemakule ʻili i hoʻokumu ʻia e ka mālamalama ultraviolet.

He aha ka hoʻohana ʻia ʻana o ka benzophenone-4 i ka mālama ʻili?