Table 6 Exposure limits of heavy metals in indoor settled dust.

From: Health risk assessment and source tracking of heavy metal exposure from indoor settled dust in an environmentally vulnerable area of the Republic of Korea

Heavy metal

Calculated concentration (µg/g)

Exposure limit (µg/g)

Non-carcinogenic

Cu

110,806.6

110,805.0

Mn

59,930.0

59,925.0

Co

977.6

975.0

Zn

801,778.9

801,775.0

Cr

845,118.3

845,115.0

Carcinogenic

Pb

796.5

795.0

Cd

1.7

1.5

Ni

2.5

2.0