Skip to main content
. 2019 Mar 4;9:3330. doi: 10.1038/s41598-019-40119-2

Figure 1.

Figure 1

Response surface plots (a) to (j)) showing the effect of desorption flow (A) and cryofocusing temperature (B) at fixed cryodesorption temperature (C) on the peak areas of the target OPEs and on the global desirability (k). Cryodesorption temperature was fixed at the central point (290 °C) since it did not affect any of the responses significantly.