Health Risk Assessment of Heavy Metals in Soils before Rice Sowing and at Harvesting in Southern Jiangsu Province, China

Table 5

Amount of heavy metals ingested by adults and children through the soil-human route.

Age	Target	Heavy metal intake (μg/d)
		Cd	Pb	Cu	Zn
Adult	Maximum values	0.08	2.82	2.34	4.76
	Minimum values	0.03	2.37	1.30	2.01
	Average values	0.06	2.60	1.82	3.38
	PTWI	60.00	428.57	—	—
Children	Maximum values	0.32	13.52	6.46	15.17
	Minimum values	0.18	7.15	4.46	12.55
	Average values	0.25	10.34	5.46	13.86
	PTWI	30.00	107.14	—	—

Conversion of weekly tolerance to daily tolerance.