Determination of Nicotine in Tobacco by Chemometric Optimization and Cation-Selective Exhaustive Injection in Combination with Sweeping-Micellar Electrokinetic Chromatography

Table 1

Values of CCD variables.

	−α	−1	0	+1	+α
Methanol proportion (%)	4.88	10	17.5	25	30.11
SDS concentration (mM)	24.43	50	87.5	125	150.56
HCB phosphate concentration (mM)	32.38	75	137.5	200	242.61