Table 5.

The partition coefficients (lgK_d) of heavy metals in the Zhujiang River and global rivers.

River		V	Cr	Mn	Ni	Cu	Cd	Pb
Zhujiang River (this study)	Min	3.6	3.3	4.7	3.7	2.9	4.6	5.4
	Max	5.0	4.5	7.0	4.5	5.3	5.5	6.2
	AM	4.6	4.2	6.3	4.2	4.6	5.0	5.9
Rivers in US		—	5.1	—	4.6	4.7	4.7	5.6
Tigris River		—	6.7	6.6	6.5	6.3	6.3	6.7
Day River		—	5.5	5.0	5.3	5.4	5.7	5.3
Sava River		4.7	4.2	5.9	4.4	3.9	3.0	4.6
Yangtze River		—	4.1	5.0	3.9	4.1	4.2	5.2
Jialingjiang River		—	4.3	5.0	3.8	4.2	4.8	5.1
Beijiang River		—	—	—	—	4.7	4.8	5.2
Upper Zhujiang River		5.4	5.6	6.6	5.3	4.9	5.1	5.7

Note: Min, minimum; Max, maximum; AM, arithmetical mean; —, no data; Rivers in US [53]; Tigris River [6]; Day River [51]; Sava River [50]; Yangtze River and Jialingjiang River [52]; Beijiang River [8]; Upper Zhujiang River [21].