Table 1.

Total mercury contents in earthworms’ vomitus with different body length

Site	Earthworm species	Total mercury contents in vomitus (mg/kg)
		<10 cm	10–15 cm	15–20 cm
(S1) Huagong Bridge	Drawida sp.	1.580	0.531	0.407
	Allolobophora sp	2.863	2.147
(S2) Longwan Bridge	Drawida sp.	2.308	0.436	0.170
	Allolobophora sp.	5.667	8.886
(S3) Wastewater treatment plant	Limnodrilus sp.	0.096
(S4) Daochi Village	Drawida sp.	2.389
	Allolobophora sp.		2.450	1.470