Orthogonal Design Study on Factors Affecting the Determination of Common Odors in Water Samples by Headspace Solid-Phase Microextraction Coupled to GC/MS

Table 4

The basic analytical results of the orthogonal experiment design L₃₂ (4⁹).

Compounds (×10^7)	K value	Factors^a
		A	B	C	D	E	F	G
2-MIB	𝐾1	13.437	13.193	18.280	18.921	17.173	19.497	18.747
	𝐾2	18.123	20.024	17.818	18.350	20.666	18.500	19.563
	𝐾3	24.053	21.317	20.400	20.335	18.390	18.956	19.176
	𝐾4	21.520	22.599	20.635	19.527	20.904	20.180	19.647
GSM	𝐾1	44.442	43.076	69.669	68.587	63.481	68.596	67.181
	𝐾2	58.090	76.959	63.101	65.587	70.959	63.793	69.662
	𝐾3	73.296	74.009	65.210	69.956	67.341	66.745	69.415
	𝐾4	97.633	79.417	75.481	69.331	71.680	74.327	67.203

aFactor A: extraction temperature (°C); Factor B: extraction time (min); Factor C: rotate-speed (rpm); Factor D: ionic strength (w/v, %); Factor E: desorption time (min); Factor F: desorption temperature (°C); and Factor G: solution pH.