Page 5 - Shimadzu MALDI-7090

dard in MS/MS acquisition,

ented and exclusive to Shimadzu

High resolution ion gate

The MALDI-7090 is equipped with a dual wire peptide A
Bradbury-Nielsen high resolution precursor 100
90
ion gate. 80 peptide B
70
Compounds of similar nominal mass may 60
50
produce fragment ion spectra that contain 40
30
ions from both precursors. However the high 20
10
resolution ion gate allows the individual 0
1030 1032 1034 1036 1038 1040 1042 1044 1046 1048 1050 1052 1054 1056 1058 1060 1062 1064 1066 1068 1070
m/z
gating of species close in nominal mass thus
MS/MS MS/MS
producing distinct fragment ion spectra. low resolution ion gate high resolution ion gate
peptide A + peptide B peptide A only
y7 y7
peptide A peptide A
100 100
90 90
(b-H2O)7 (b-H2O)7
80 y7 80
peptide A peptide A
70 peptide B 70
60 60
(b-H2O)7
peptide B
50 50
40 40
b7 b7
30 30
20 peptide A peptide B 20 b7
peptide A
10 10
0 0
860 870 880 890 900 910 920 930 940 950 960 970 980 860 870 880 890 900 910 920 930 940 950 960 970 980
m/z m/z
MALDI-7090
A New Dimension in MALDI TOF-TOF Design 5