ngā purongo

He maha ngā kōwhiringa tiaki kiri a te tangata i ēnei rā, neke atu i te 10 ngā momo o ngā kai o te pare rā, engari ko ētahi hua tiaki kiri te āhua nei he nui ake te kino ki te kiri. Nā, me pēhea te whiriwhiri i ngā hua tiaki kiri tika mō tō tātou kiri? Me kōrero tātou mō te benzophenone-4, he kai nui i roto i ngā hua tiaki kiri.

He aha te benzophenone-4?

Benzophenone-4He matū benzophenone tēnei, e kiia nei ko BP-4, ko te tātai matū C14H12O6S. He paura mā, he paura kōwhai mārama rānei i te pāmahana rūma, ā, ka taea te mimiti i te mārama UV o te 285 ki te 325 Im. Hei ngongo ultraviolet whānui, he pai ngā painga o te BP-4, arā, he tere mimiti teitei, kāore e paitini, kāore e pangia te kiri, he pai te pumau o te mārama me te wera, me ētahi atu. Ka taea e te ngongo UV BP-4 te mimiti i te UV-A me te UV-B i te wā kotahi, he paninga rā akomanga I kua whakaaetia e te United States FDA, he maha ngā whakamahinga o te United States me ngā whenua Pākehā, ā, ko te nuinga o te whakamahinga he kirīmi paninga rā me ētahi atu whakapaipai paninga rā.

BP-4 mimiti UVKāore he paitini, kāore e mura, kāore e pahū, ngāwari ki te mimiti i te makuku i te rangi, he mahi tino pai o te waikawa wai waikawa UV, ka taea te mimiti kaha i te mārama UV. He whānuitia te whakamahinga hei mimiti ultraviolet mō ngā paninga polymer wai me te peita papura hei ārai i te waikura photocatalytic o ngā paninga polymer wai me te peita papura; he pai hei pare rā mō ngā mea whakapaipai, ā, he mimiti UV hei whakapai ake i te ātete huarere o ngā kakahu huruhuru hipi.

He whānuitia te whakamahinga o te Benzophenone i roto i ngā taonga o te whare pērā i ngā mōhiti kanohi, ngā takai kai, ngā horoi kakahu me ngā hua horoi hei tiaki i te pānga o te hihi UV. Ka taea e ia te whakapoke i te wai inu me te heke mai i ngā takai kai ki te kai. Ka whakamahia te Benzophenone i roto i ētahi waituhi takai kai, ā, ka heke pea ki te kai. Ka puta noa te Benzophenone i roto i ētahi kai (pērā i te karepe waina me te karepe Muscat) ā, ka tāpirihia ki ētahi atu hei mea kakara.

I roto i ngā hua tiaki whaiaro, ka whakamahia te benzophenone hei whakarei kakara, hei ārai rānei i te ngaronga o te kakara me te tae o ngā hua pēnei i ngā hopi i raro i te hihi ultraviolet. Ko ngā mea i ahu mai i te benzophenone pēnei i te BP2 me te oxybenzone (BP3) mebenzophenone-4 (BP-4)e whakamahia ana i roto i ngā paninga ārai-rā. E whakamahia ana te Oxybenzone hei mimiti me te whakaū i te hihi ultraviolet, inā koa i roto i ngā kirihou me ngā paninga ārai-rā. E whakamahia ana hoki te Benzophenone me te oxybenzone i roto i te peita whao me te hinu ngutu.

He aha te whakamahinga o te benzophenone-4 i roto i te tiaki kiri?

He pai te pumau o te rama me te wera o te kiriuhi UV BP-4, ā, he whānuitia te whakamahinga i roto i ngā kirimi pare-rā, te kirīmi, te honi, te hinu whakakī, me ētahi atu mea whakapaipai pare-rā. He tino pai mō ngā pare-rā, te hinu whakakī, te peita, ko te inenga whānui ko te 0.1-0.5%. Ko te inenga noa ko te 0.2-1.5%.

Pūmotu UVBP-4He ngāwari te wairewa ki te wai, ā, he waikawa te wairewa, nō reira me whakakore i te wā e whakamahia ana. Mēnā he nui ake te pH o te wairewa i te 9, ka whaiti te roangaru mimiti, ko te whakamahinga matua o te pare rā i ia rā me ētahi atu hua tiaki kiri hei ārai i te koroheketanga o te kiri i puta mai i te hihi ultraviolet.

He aha te whakamahinga o te benzophenone-4 i roto i te tiaki kiri?