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. 2014 Aug 23;86(18):9169–9176. doi: 10.1021/ac502055e

Figure 6.

Figure 6

(A) Effects of guard DC bias voltage on the relative intensity (black inverted triangles) and resolving power (blue squares) for m/z 922. The RF frequency was 685 kHz and amplitude was 320 Vp-p. Intensities are normalized to m/z 922 intensity at a guard bias of 11 V. (B) Effects of RF amplitude on relative intensity (black inverted triangles) and resolving power (blue squares) for m/z 922. The guard bias used was 11 V and RF frequency was 685 kHz. Intensities are normalized to m/z 922 intensity at 320 Vp-p RF.