The product ion mass spectra of LDPE film containing 1 wt% Chimassorb 944 and Tinuvin 622 via LESA-ESI MS/MS

(a) Compound 1 (Precursor ion m/z 601.563 [C35H68N8 + H]+; photodegradation products derived Chimassorb 944), (b) Compound 2 (Precursor ion m/z 461.396 [C26H48N6O + H]+; photodegradation products derived Chimassorb 944), (c) Compound 3 (Precursor ion m/z 629.558 [C36H68N8O + H]+; photodegradation products derived Chimassorb 944), (d) Compound 4 (Precursor ion m/z 363.322 [C20H38N6+ H]+; photodegradation products derived Chimassorb 944), (e) Compound 5 (Precursor ion m/z 417.370 [C24H44N6 + H]+; photodegradation products derived Chimassorb 944), (f) Compound 6 (Precursor ion m/z 403.354 [C23H42N6 + H]+; photodegradation products derived Chimassorb 944) [LESA-ESI MS/MS measurement conditions] LESA system: Triversa Nanomate (Advion Inc.) MS system: Q Exactive plus (Thermo Fischer Scientific Inc.) Solvent: IPA/THF = 75/25 Pressure: 0.3 kpsi Voltage: 1.8 kV Liquid volume: 2 μL MS conditions: Positive, product ion scan, NCE 15-55