Micelle-Mediated Extraction Prior to LC-UV for Preconcentration and Determination of Trace Amounts of Bisphenol A in Environmental Samples

Table 2

OA₁₆ (4⁵) experimental design for the optimization of CPE of BPA.

Trial no.	pH	% Surfactant	Ionic strength (mol L^−1)	Temperature (°C)	Organic solvent volume (µL)
1	6	0.3	0.01	50	75
2	5	0.1	0.5	50	50
3	4	0.05	0.1	50	125
4	3	0.3	0.5	60	125
5	3	0.1	0.1	40	75
6	5	0.3	0.1	30	100
7	3	0.2	0.25	50	100
8	5	0.05	0.25	60	75
9	4	0.2	0.5	30	75
10	5	0.2	0.01	40	125
11	6	0.1	0.25	30	125
12	3	0.05	0.01	30	50
13	4	0.3	0.25	40	50
14	6	0.05	0.5	40	100
15	6	0.2	0.1	60	50
16	4	0.1	0.01	60	100