Lilemong tse leshome tse fetileng tlhoko ea ts'ireletso ea UVA e ntlafalitsoenge ne e eketseha ka potlako.
Mahlaseli a UV a na le litlamorao tse mpe, ho kenyelletsa ho chesoa ke letsatsi, foto-botsofali le mofetshe wa letlalo. Liphello tsena li ka thibeloa feela ka ho itšireletsa khahlanong le mahlaseli a mangata a UV, ho kenyeletsa le UVA.
Ka lehlakoreng le leng ho boetse ho na le mokhoa oa ho fokotsa palo ea "lik'hemik'hale" letlalong. Sena se bolela hore UV abso e sebetsang hantle haholorberse lokela ho ba teng bakeng sa tlhokahalo e ncha ea tšireletso e pharaletseng ea UV.Sunsafe-BMTZ(Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine e etselitsoe ho phethahatsa tlhokahalo ena. E tsitsitse lifotong, e qhibiliha ka oli, e sebetsa hantle haholo 'me e akaretsa mefuta ea UVB le UVA. Ka selemo sa 2000, ba boholong Europe ba ile ba eketsa Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine lethathamong le letle la li-cosmetic UV absorbers.
•UVA:Ho hlokahala lihlopha tse peli tsa ortho-OH bakeng sa ho qhala matla ka matla ka marokho a intramolecular hydrogen. E le ho fumana ho monya ho matla ho UVA, li-para-positions tsa likarolo tse peli tse fapaneng tsa phenyl li lokela ho nkeloa sebaka ke O-alkyl, e leng se hlahisang bis-resorcinyl triazine chromophor.
•UVB:Sehlopha se setseng sa phenyl se kopantsoeng le triazine se lebisa ho monyeng ha UVB. Ho ka bontšoa hore ts'ebetso e kholo ea "full spectrum" e fihleloa ka O-alkyl e sebakeng sa para-position. Ntle le ho qhibilihisa li-substituents, HPTs e batla e sa qhibilihe ka har'a oli ea litlolo. Li bontša litšobotsi tse tloaelehileng tsa li-pigments (mohlala, lintlha tse phahameng tse qhibilihang). E le ho eketsa ho qhibiliha ka mekhahlelo ea oli, sebopeho sa filthara ea UV se fetotsoe ka nepo.
Melemo:
Tšireletso ea letsatsi e pharaletseng
E bapisoa haholo le li-filters tse ling tsa UV
Ho tsitsa ha foromo
Nako ea poso: Feb-18-2022