Hong Kong EPD does not publish PM2.5 nor ultrafine data, unlike other first world countries !
PM0.1 Ultrafines
Respirable Ultrafine particles are the size of a virus and enter the body into the lungs unhindered by nose hairs. They can carry heavy metals and hang suspended in the air.
They can cling to VOCs in the air forming a lethal brown ‘haze’
PM2.5
Respirable Particulate matter are the size of larger bacteria and the smallest red blood cells. They enter the body into the lungs unhindered by nose hairs. They can carry heavy metals and hang suspended in the air They can cling to VOCs in the air forming a lethal brown ‘haze’
DOWNLOAD PDF : Science – FineParticles