Supplementary Materials s16

Supplementary materials

for the article

Quantification of transformation products of unsymmetrical dimethylhydrazine in water using SPME and GC-MS

Nadezhda V. Bakaikina1, Bulat Kenessov1*, Nikolay V. Ul’yanovskii2, Dmitry S. Kosyakov2, Sergey A. Pokryshkin2, Miras Derbissalin1, Zhailaubay K. Zhubatov3

1 Center of Physical Chemical Methods of Research and Analysis, Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, 96A Tole Bi Street, 050012 Almaty, Kazakhstan

2 Core Facility Center ‘Arktika’, Northern (Arctic) Federal University, 17 Severnaya Dvina Embankment, 163002 Arkhangelsk, Russia

3 Scientific Research Center “Garysh-Ecologiya”, Aerospace Committee of the Ministry of Investments and Development of the Republic of Kazakhstan, 108 Nauryzbay Batyr Street, 050000 Almaty, Kazakhstan

*Corresponding author - e-mail: ; 96A Tole bi street, Lab. 101, 050012 Almaty, Kazakhstan

Table S1 Selected ion monitoring (Q1) program of MS/MS detection of UDMH transformation products using positive chemical ionization

Target compound / Retention time (min) / m/z of quantification ion (dwell 150 ms) / m/z of confirmation ion (dwell 150 ms) / Target ratio of ions’ intensities (%) / Group
# / Start time (min)
Pyridine / 22.2 / 80 / 108 / 5.0 / 1 / 20.0
Pyrazine / 23.3 / 81 / 109 / 5.5 / 2 / 23.2
N-Nitrosodimethylamine / 26.9 / 75 / 74 / 1.9 / 3 / 25.5
N,N-Dimethylformamide / 27.4 / 74 / 73 / 17.2
1-Methyl-1H-1,2,4-triazole / 34.9 / 84 / 112 / 5.5 / 4 / 30.0
N-Methylformamide / 36.5 / 89 / 90 / 24.6 / 5 / 35.8
1-Formyl-2,2-dimethylhydrazine / 36.7 / 83 / 111 / 4.6
1-Methyl-1H-imidazole / 37.7 / 46 / 47 / 64.2 / 6 / 37.3
Formamide / 40.1 / 139 / 111 / 4.4 / 7 / 38.9
2-Furaldehyde dimethylhydrazone / 40.2 / 69 / 97 / 7.0
1H-Pyrazole / 40.8 / 83 / 111 / 4.7 / 8 / 40.7
3-Methyl-1H-pyrazole / 41.5 / 97 / 125 / 4.2 / 9 / 41.2
3,5-Dimethyl-1H-pyrazole / 42.4 / 80 / 108 / 5.0 / 10 / 42.0

Table S2 MRM program of MS/MS detection of UDMH transformation products using positive chemical ionization

Target compound / Retention time (min) / Dwell (ms) / Precursor ion (m/z) / Product ion (m/z) / Collision energy (eV) / Fragment intensity ratio (%)
Pyridine / 22.2 / 300 / 80.1 / 53.1 (27.1) / 19 (25) / 37
Pyrazine / 23.3 / 300 / 81.1 / 81.1 (28.1) / 16 (20) / 63
N-Nitrosodimethylamine / 26.9 / 200 / 75.1 / 43.0 (58.1) / 10 (16) / 35
N,N-Dimethylformamide / 27.4 / 200 / 74.1 / 46.1 (31.1) / 16 (10) / 39
1-Methyl-1H-1,2,4-triazole / 34.9 / 200 / 84.1 / 57.1 (42.1) / 12 (20) / 29
N-Methylformamide / 36.5 / 200 / 60.1 / 42.1 (32.1) / 12 (10) / 57
1-Formyl-2,2-dimethylhydrazine / 36.7 / 200 / 89.1 / 45.1 (71.1) / 10 (6) / 16
1-Methyl-1H-imidazole / 37.7 / 300 / 83.1 / 42.0 (56.1) / 16 (12) / 44
Formamide / 40.1 / 200 / 46.0 / 29.0 (44.1) / 20 (28) / 13
2-Furaldehyde dimethylhydrazone / 40.2 / 200 / 138.1 / 44.1 (111.1) / 20 (6) / 80
1H-Pyrazole / 40.8 / 200 / 69.1 / 42.1 (28.0) / 16 (20) / 23
3-Methyl-1H-pyrazole / 41.5 / 300 / 83.1 / 42.0 (56.1) / 16 (12) / 43
3,5-Dimethyl-1H-pyrazole / 42.4 / 300 / 97.1 / 56.1 (28.1) / 12 (16) / 85