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

Table 3

ANOVA parameters for peak height.

Source	Sum of squares	df	Mean squares	value	value
Model	9842.34	9	1093.59	12.75	0.0029
	5629.57	1	5629.57	65.66	0.0002
	20.26	1	20.26	0.23	0.6441
	1771.48	1	1771.48	20.66	0.0039
	0.034	1	243.65	243.65	0.1428
	0.025	1	186.53	2.17	0.1906
	1.006	1	11.88	0.13	0.7225
	0.806	1	679.73	7.92	0.0305
	0.110	1	310.23	3.61	0.1058
	0.484	1	310.97	3.62	0.1055
			0.950

: methanol proportion; : SDS concentration; : HCB phosphate concentration.
: coefficients of determination that totally explain the variance in the data.
.