Table 4. Comparison of Gas Phase Oxidation Product Yields, on a Percent Mole Basis, Observed in This Study With Results From Other Terpene Ozonolysis Experiments Conducted in the Dark Product Product Yield, %, This Work Product Yield, %, Other Studies Reference 3-carene Acetone 9.5 10 [Orlando et al., 2000] Acetone 9.5 22-23 [Reissell et al., 1999] m/z 169 0.3 tracea [Hakola et al., 1994] alpha-terpinene Acetone 4.4 2-3 [Reissell et al., 1999] beta-caryophyllene Formaldehyde 76 80 [Grosjean et al., 1993] alpha-pinene Acetone 5.9 3 [Orlando et al., 2000] Acetone 5.9 6-8 [Reissell et al., 1999] Pinonaldehyde 19-34b 6-18 [Yu et al., 1999a] Pinonaldehyde 19-34b 14 [Alvarado et al., 1998] Pinonaldehyde 19-34b 16 [Baker et al., 2001] Pinonaldehyde 19-34b 19 [Hakola et al., 1994] Pinonaldehyde 19-34b 23 (dry) [Warscheid and Hoffmann, 2001] Pinonaldehyde 19-34b 32 (higher RH) [Berndt et al., 2003] Pinonaldehyde 19-34b 42 (lower RH) [Berndt et al., 2003] Pinonaldehyde 19-34b 53 (RH +/- 60%) [Warscheid and Hoffmann, 2001] m/z 153 5.4 +/- 0.6c 2.1d [Alvarado et al., 1998] m/z 153 5.4 +/- 0.6c 3d [Berndt et al., 2003] m/z 155 0.3 +/- 0.1 1.1-2.4e [Yu et al., 1999a] m/z 171 0.1 +/- 0.02 2.2-9.8f [Yu et al., 1999a] m/z 185 0.05 +/- 0.02 0.6-6.6g [Yu et al., 1999a] Terpinolene Acetone 44 50 [Orlando et al., 2000] Acetone 44 48-50 [Reissell et al., 1999] m/z 111, 93 53 +/- 9h 40 [Hakola et al., 1994] beta-pinene Formaldehyde 65 42 [Grosjean et al., 1993] Formaldehyde 65 65 (higher RH) [Winterhalter et al., 1999] Formaldehyde 65 77 [Jaoui and Kamens, 2003] Formaldehyde 65 84 (dry) [Winterhalter et al., 1999] Acetone 3.6 0.9 [Orlando et al., 2000] Acetone 3.6 2-7 [Reissell et al., 1999] Acetone 3.6 5 [Jaoui and Kamens, 2003] Nopinone 17 16 (dry) [Winterhalter et al., 1999] Nopinone 17 16-17 [Yu et al., 1999a] Nopinone 17 21 [Jaoui and Kamens, 2003] Nopinone 17 22 [Grosjean et al., 1993] Nopinone 17 23 (5% RH) [Hakola et al., 1994] Nopinone 17 35 (higher RH) [Winterhalter et al., 1999] Nopinone 17 40 [Hatakeyama et al., 1989] m/z 153 6.1 +/- 1 1.9-4.5i [Jaoui and Kamens, 2003] m/z 153 6.1 +/- 1 2-8j [Yu et al., 1999a] m/z 155 4.7 +/- 1 5.3-8.1k [Jaoui and Kamens, 2003] m/z 155 4.7 +/- 1 7-8l [Yu et al., 1999a] m/z 171 0.1 +/- 0.03 4.6-14.3f [Yu et al., 1999a] m/z 185 1.1 +/- 0.3 0.4-0.6g [Yu et al., 1999a] Myrcene Formaldehyde 51 26 [Ruppert et al., 1997] Acetone 23 21 [Reissell et al., 2002] Acetone 23 25 [Orlando et al., 2000] Acetone 23 29 [Ruppert et al., 1997] m/z 75 16 +/- 4m 33-38 [Reissell et al., 1999] m/z 75 16 +/- 4m 19 [Ruppert et al., 1997] m/z 111 + 93 49 +/- 8n 70 [Reissell et al., 2002] Linalool Formaldehyde 34 36 [Shu et al., 1997] Acetone 16 21 [Shu et al., 1997] m/z 127 11 +/- 2 12.6o [Shu et al., 1997] m/z 129, 111, 93 50 +/- 9p 85q [Shu et al., 1997] aYield of caronaldehyde. bEstimated yield (see text). cUpper limit yield of alpha-pinene oxide based on the calibrated concentration calculated from m/z 153. dYield of alpha-pinene oxide. eYield of norpinonaldehyde. fYield of norpinonic acid. gYield of pinonic acid. hYield of 4-methyl-3-cyclohexenone (C7H10O = 110 amu). iSum of molar yields of reported products with molecular weight of 152, i.e., 3-oxonopinone, beta-pinene oxide, and myrtenol. jMolar yield of 3-oxonopinone. kSum of molar yields of reported products with molecular weight of 154, i.e., 1-hydroxynopinone (4.1%) and 3-hydroxynopinone (3.5%). lYield of the hydroxynopinones. mYield of hydroxyacetone (C3H6O2 = 74 amu). nYield of 4-vinyl-4-pentenal (C7H10O = 110 amu). oYield of 5-ethenyldihydro-5-methyl-2(3H)-furanone (C7H10O2 = 126 amu). pThe sum of m/z 129, 111, and 93 were used in the comparison with the 4-hydroxy-4-methyl-5-hexen-1-al yield and 2-ethenyl-2-methyl-5-hydroxytetrahydrofuran because of the likely dehydration of the hydroxyl and aldehyde groups from the parent (m/z 129) ion in the PTR-MS. qYield of 4-hydroxy-4-methyl-5-hexen-1-al (C7H12O2 = 128 amu).