Efficacy of Moringa oleifera Seed Husk as Adsorptive Agent for Trihalomethanes from a Water Treatment Plant in Southwestern, Nigeria

Table 6

Mean percentage (%) recoveries of trichloromethane and tribromomethane from raw, treated and blank water samples after extraction with Dichloromethane.

Sample ID	Unspiked concentration (mg/l)	Spiked concentration (mg/l)	% recovery
Raw water sample
Trichloromethane	0.5624	10.000	96 ± 1.41
Tribromomethane	0.5994	10.000	95 ± 1.21
Treated water sample
Trichloromethane	0.3161	9.938	96 ± 0.70
Tribromomethane	0.3514	6.172	60 ± 2.82
Blank water sample
Trichloromethane	0.000	15.734	100 ± 0.00
Tribromomethane	0.000	10.932	100 ± 0.00