Table 4.

Summaries of measured trace elements in freshwater from freshwater lakes at home and abroad (μg/L).

Name of Lakes	Zn	Cu	Cd	Cr	As	Pb	Reference
Honghu Lake, China	2.13	1.93	0.04	1.71	2.83	1.28	[13]
The Yangtze River, China	9.40	10.70	4.70	20.90	13.20	55.10	[46]
The upper Han River, China	NA	21.65	3.78	-	20.05	2.31	[47]
East Dongting Lake, China	8.86	0.07	0.05	-	3.23	0.04	[2]
Xiangjiang River, China	84.57	20.33	1.34	6.61	12.24	2.29	[3]
Rawal Lake, Pakistan	14	10	6	9	-	162	[22]
Catalan River, Spain	1.9	1.3	1.2	2.4	2.9	2.2	[48]
Tigris River, Turkey	37	165	1.37	<5	2.35	0.34	[49]
This study	18.04	3.09	0.14	1.63	0.99	3.42