Table 1.

Mean recovery (%) in the water samples (n = 3).

	Mean Recoveries (%)
Toxin	Lake Water		River Water		Sea Water
	400 ng L−1	100 ng L−1	400 ng L−1	100 ng L−1	400 ng L−1	100 ng L−1
DA	82	92	70	86	79	87
MC-RR	89	90	71	95	84	101
MC-YR	106	114	110	89	97	87
MC-LR	112	118	96	87	96	95
MC-LW	104	108	71	71	70	86
OA	97	113	82	103	94	93

For lake water: RSD < 16%; for river water: RSD < 15%; for seawater: RSD < 10%.