Figure 1.
(a) Traveling wave ion mobility separation (TWIMS) of Hex-glycolaldehyde standards in the positive mode as [M+Na]+ ions at m/z 245.1. (b) TWIMS of Hex-glycolaldehyde standards in the negative mode as [M-H]− ions at m/z 221.1. (c) TWIMS of HexNAc-glycolaldehyde standards in the positive mode as [M+Na]+ ions at m/z 286.1. (d) TWIMS of HexNAc-glycolaldehyde standards in the negative mode as [M-H]− ions at m/z 262.1.