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He aha nā pōʻino o nā mea ʻala i ka lewa?

Ma ka lā 17 o ʻOkakopa, 2013, ua hoʻopuka ka International Agency for Research on Cancer, kahi hui o ka World Health Organization, i kahi hōʻike no ka manawa mua ʻo ka pollution ea he carcinogenic i ke kanaka, a ʻo ka mea nui o ka haumia ea ʻo ka particulate mea.

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I loko o ke kaiapuni maoli, ʻo ka mea ʻala i ka lewa ka nui o ke one a me ka lepo i lawe ʻia e ka makani, ka lehu pele i hoʻokuʻu ʻia e ka lua pele, ka uahi a me ka lepo i hoʻokumu ʻia e ke ahi o ka ululāʻau, ka paʻakai kai i hoʻoheheʻe ʻia mai ke kai i ʻike ʻia i ka lā, a me ka pollen o nā mea kanu.

Me ka hoʻomohala ʻana o ka nohona kanaka a me ka hoʻonui ʻana i ka ʻoihana, hoʻopuka pū nā hana kanaka i ka nui o nā mea ʻala i ka lewa, e like me ka soot mai nā ʻano hana ʻoihana like ʻole e like me ka hana mana, metallurgy, petroleum, a me ka kemika, ka puhi ʻana i ka uahi, ka pau ʻana mai. kaʻa, puhi paka etc.

ʻO ka mea ʻala i ka lewa e pono e hopohopo nui e pili ana i nā mea inhalable particulate, e pili ana i ka particulate me ka aerodynamic equivalent anawaena o lalo o 10 μm, ʻo ia ka PM10 a mākou e lohe pinepine ai, a ʻo ka PM2.5 ka emi ma mua o 2.5 μm. .

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Ke komo ka ea i loko o ka ʻōpū hanu kanaka, hiki i ka lauoho ihu a me ka mucosa ihu ke ālai i ka hapa nui o nā ʻāpana, akā ʻaʻole hiki i ka poʻe ma lalo o PM10.Hiki i ka PM10 ke hōʻiliʻili i ka ʻōpū hanu luna, aʻo ka PM2.5 hiki ke komo pololei i ka bronchioles a me ka alveoli.

Ma muli o kona ʻano liʻiliʻi a me ka nui o ka ʻili o ka ʻili, ʻoi aku ka nui o nā mea ʻala i ka adsorb i nā mea ʻē aʻe, no laila ʻoi aku ka paʻakikī o nā kumu o kona pathogenesis, akā ʻo ka mea nui loa ʻo ia ke kumu o ka maʻi cardiovascular, ka maʻi hanu a me ka maʻi kanesa.
ʻO ka PM2.5, ka mea maʻamau a mākou e mālama nei, he hapa liʻiliʻi o nā ʻāpana inhalable, akā no ke aha e nānā nui ai i ka PM2.5?

ʻO kaʻoiaʻiʻo, ʻo kekahi ma muli o ka hoʻolaha media, a ʻo ka mea ʻē aʻe ʻoi aku ka maikaʻi o ka PM2.5 a maʻalahi hoʻi e komo i nā mea haumia organik a me nā metala kaumaha e like me polycyclic aromatic hydrocarbons, kahi e hoʻonui nui ai i ka hiki ke carcinogenic, teratogenic, a me mutagenic.


Ka manawa hoʻouna: Mar-16-2022