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

Table 2

Soil Environment Quality Risk Control Standard for Soil Contamination of Agricultural Land in China (GB15618-2018).

Heavy metals	Risk screening values for soil contamination of agricultural land (mg/kg)
	pH ≤ 5.5	5.5 ＜ pH ≤ 6.5	6.5 ＜ pH ≤ 7.5	pH ＞ 7.5
Cr	250	250	300	350
Cd	0.3	0.4	0.6	0.8
Pb	80	100	140	240
Cu	50	50	100	100
Zn	200	200	250	300