Table 5.

ANOVA for phenanthrene and cadmium removal.

Pollution	Source	DF	SS	F-value	p	Contribution %
Phenanthrene	pH	2	1289.176	1050.959	0	0.8102
	Concentration	2	245.476	200.117	0	0.1544
	Temperature	2	23.479	19.140	0	0.0148
	Ion strength	2	20.519	16.727	0	0.0129
	Error	18	11.040			0.0069
Cadmium	pH	2	4284.147	3168.157	0	0.9345
	Concentration	2	230.57	170.486	0	0.0500
	Temperature	2	47.033	34.781	0	0.0100
	Ion strength	2	7.801	5.769	0.012	0.0014
	Error	18	12.170			0.0027

F_0.05 (2,18) = 3.55.