Optimal values and ANOVA results of sampling and desorption variables.

Source	Sum of squares	df	f-Value	p-Value	Source	Sum of squares	df	f-Value	p-Value
Sampling variables					Desorption variables
Aniline
Model	1.261 × 107	5	30.88	0.0001	Model	1.361 × 108	5	40.12	<0.0001
A	1.087 × 106	1	13.32	0.0082	C	1.762 × 108	1	32.42	0.0002
B	7.880 × 106	1	96.52	< 0.0001	D	2.599 × 108	1	47.82	<0.0001
AB	1.573 × 106	1	19.26	0.0032	CD	4761.00	1	132.23	<0.0001
A2	1.805 × 105	1	20.21	0.0807	C2	5.031 × 105	1	832.25	<0.0001
B2	2.049 × 106	1	25.10	0.0015	D2	3.325 × 106	1	10.23	0.0121
R 2 = 0.95 optimal relative humidity (%) = 20					R 2 = 0.88 optimal time (min) = 3
Adj R2 = 0.92 optimal temperature (°C) = 15					Adj R2 = 0.86 optimal temperature (°C) = 270
N,N-Dimethylaniline
Model	1.398 × 108	5	29.16	0.0002	Model	4.519 × 108	2	108.52	<0.0001
A	9.513 × 106	1	9.92	0.0161	C	1.676 × 108	1	80.48	<0.0001
B	9.006 × 107	1	93.94	<0.0001	D	2.843 × 108	1	136.55	<0.0001
AB	1.463 × 107	1	15.27	0.0058	CD	3.224 × 105	1	141.2	<0.0001
A2	8.335 × 106	1	8.70	0.0214	C2	4.056 × 107	1	192.88	<0.0001
B2	2.438 × 107	1	25.43	0.0015	D2	2.342 × 107	1	89.32	<0.0001
R 2 = 0.95					R 2 = 0.95 optimal time (min) = 3
Adj R2 = 0.92 optimal relative humidity (%) = 20					Adj R2 = 0.94 optimal temperature (°C) = 270
Adj R2 = 0.96 optimal temperature (°C) = 16.29					Adj R2 = 0.74
o-Toluidine
Model	1.195 × 109	5	143.97	<0.0001	Model	1.375 × 109	5	750.77	<0.0001
A	2.303 × 108	1	138.68	<0.0001	C	2.870 × 108	1	783.67	<0.0001
B	6.377 × 108	1	384.02	<0.0001	D	9.522 × 108	1	2600.05	<0.0001
AB	2.151 × 108	1	129.54	<0.0001	CD	2.884 × 105	1	231.2	<0.0001
A2	2.950 × 107	1	17.76	0.0040	C2	6.078 × 107	1	165.98	<0.0001
B2	1.099 × 108	1	66.17	<0.0001	D2	2.509 × 107	1	68.52	<0.0001
R 2 = 0.99 optimal relative humidity (%) = 20					R 2 = 0.99 optimal time (min) = 2.98
Adj R2 = 0.98 optimal temperature (°C) = 15					Adj R2 = 0.98 optimal temperature (°C) = 269.36