Fig. 8 The relationship between the chosen peaks’ intensities and signal-to-noise ratio (s/n) in terms of the number of matrix layers (A) and the spraying nozzle height (B) for the positive ionization mode rat spinal cord tissue slices (matrix: 2.5 mg/ml DAN 50% ACN)
Here we also observe discrepancies between ion maps produced by different matrices (see: discussion).
The number of layers and the spraying nozzle height – negative ionization mode (9AA, norharmane, NEDC and DAN matrices)
9-Aminoacridine (9AA 7 mg/ml 70% EtOH)) – negative ionization mode
Four different numbers of matrix layers (l= 10, 12, 14, 16) and four different positions of spraying nozzle height (Z=25, 15, 5, 1) were tested for 9AA as a reference matrix in the negative ionization mode. As previously, the peaks intensities and the s/n ratios were compared.