Seoul Shrouded in Smog Blowing from China


Smog blowing from central China covered the South Korean capital on Wednesday (December 4). The National Institute of Environmental Research said Seoul's daily average of the density of airborne particles less than 10 micrometers, also called PM10 concentrations, reached 81-120 micrograms on Tuesday (December 3). Residents wore face masks and expressed concern about pollution. The smog contains toxic heavy metals such as lead, cadmium and arsenic, Seoul's metropolitan government said.