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. Author manuscript; available in PMC: 2016 Jun 24.
Published in final edited form as: Atmos Environ (1994). 2016 May;132:300–308. doi: 10.1016/j.atmosenv.2016.03.003

Table 2.

Reaction products observed from limonene ozonolysis. Chromatographic retention time, structure and molecular weight and observed ions are listed.

RT (min) Structure (name) Derivatized (MW) El ions (Rel.Intensity)
graphic file with name nihms779862t3.jpg
M.W. = 136
Limonene
18.6 graphic file with name nihms779862t4.jpg
M.W. = 138
Limonaketone (LimaKet)		 208 41(10), 57 (12), 65(17), 108(18), 121(19), 136(14), 153(12), 209(17)
23.7
24.1		 graphic file with name nihms779862t5.jpg
M.W. = 184
7-hydroxyl-6-oxo-3-(prop-1-en-2yl)heptanal (7H6O)		 255 41(40), 43(50), 57(80), 79(20), 107(55), 126(68), 139 (28), 182(18), 199(10), 256(1)
27.0
27.3
27.6		 graphic file with name nihms779862t6.jpg
M.W. = 168
3-isopropenyl-6-oxo-heptanal (IPOH)		 310 41(50), 57(100), 73(28), 91(28), 107(34), 140(42), 166(40), 181(90), 198(60), 237(20), 254(30), 311(2)
29.3
29.6
29.9		 graphic file with name nihms779862t7.jpg
M.W. = 156
2-acetyl-5-oxohexanal (2A5O)		 369 41(28), 57(48), 116(35), 125(25), 169(35), 172(15), 184(22), 240(22), 370(8)
31.5
31.7
31.9
32.0		 graphic file with name nihms779862t8.jpg
M.W. = 170
3-acetyl-6-oxoheptanal (3A6O)		 383 41(15), 57(25), 65(17), 94(10), 165(25), 183(15), 198(17), 254(16), 310(15), 384(2)