Table 3: The compounds identified through GC-MS analysis and their mass fragmentation pattern formed by Sphingomonas koreensis after 15 days of incubation in MBS containing (100 mg/L) naphthalene, phenanthrene, and pyrene, separately.

NumberMetabolites RT (min)m/z (%)

1 (cont.)Naphthalene25.56128 (M+, 100), 102 (10)
2 (6 d)1-Methoxynaphthalene17.37197 (M+, 3), 153 (65), 128 (100), 102 (6)
3 (15 d)1-Hydroxy-2-naphthoate23.63237 (M+, 18), 188 (100), 141 (39), 128 (12), 107 (28), 86 (20), 53 (71)
4 (15 d)2-Hydroxy 4-methoxy cinnamate55.17239 (M+, 10), 178 (100), 161 (60), 133 (30), 55 (17)
5 (6 d)Salicylate28.45179 (M+, 8), 137 (100), 122 (12), 97 (20), 57 (40)
6 (6, 15 d)Phthalate51.84279 (M+, 10), 180 (2), 167 (42), 149 (100), 71 (12), 57 (20),
7 (15 d)Phthalate 3,4-dihydrodiol47.24267 (M+, 2), 202 (100), 174 (3), 149 (36), 137 (1), 101 (12), 98 (5)
8 (15)Pyruvate8.12101 (M+, 5), 89 (70), 73 (5), 71 (100), 56 (53)
1 (cont.)Phenanthrene44.59178 (M+, 100), 152 (6), 76 (5)
21-Hydroxyphenanthrene53.71197 (M+, 5), 193 (100), 178 (12), 127 (12), 95 (25), 69 (16), 60 (23)
3Phthalate58.97279 (M+, 12), 219 (3), 167 (42), 149 (100), 57 (14)
4Dihydroxy-cis, cis muconate semialdehyde48.21219 (M+, 2), 175 (10), 167 (100), 142 (5), 101 (10), 57 (12)
52-Hydroxy-4-methoxy cinnamate55.43239 (M+, 10), 178 (100), 161 (58), 133 (30), 55 (15)
1 (cont.)Pyrene38.59202 (M+, 100), 174 (3), 150 (5), 135 (1), 122 (3), 101 (35), 88 (10), 74 (4), 62 (2), 50 (2), 28 (3)
2 (12 d)1-Hydroxypyrene39.743218 (M+, 100), 189 (25), 174 (2), 163 (5), 150 (2), 139 (2), 109 (15), 95 (13), 81 (4), 63 (3)
3 (15 d)4,5-Dihydroxypyrene43.239236 (M+, 100), 200 (35), 174 (5), 150 (3), 118 (18), 100 (36), 74 (5), 51 (2), 28 (2)
4 (12)Phenanthrene-4,5-dicarboxylate47.125254 (M+, 19), 236 (15), 221 (100), 202 (10), 167 (25), 149 (40), 128 (21), 113 (38), 96 (35), 40 (100)
5 (12 d)3,4-Dihydroxyphenanthrene38.287208 (M+, 100), 193 (80), 176 (15), 164 (30), 150 (20), 132 (32), 118 (28), 105 (39), 79 (60), 51 (30)
6 (9 d)1-Hydroxy-2-naphthoate19.71188 (M+, 100), 146 (5), 119 (30), 105 (55), 91 (73), 78 (10), 65 (15), 51 (3), 41 (5)
7 (15 d)Benzocoumarin68.58224 (M+, 15), 207 (50), 191 (10), 163 (15), 147 (13), 120 (80), 92 (48), 63 (25), 44 (100), 16 (83)
8 (12 d)trans-2-Carboxy-benzalpyruvate37.426203 (M+, 100), 189 (9), 175 (5), 149 (5), 137 (1), 123 (1), 101 (15), 88 (10), 75 (3), 40 (12)
9 (all  d)Phthalate46.45297 (M+, 10), 167 (30), 149 (100), 132 (1), 113 (15), 93 (2), 71 (25), 57 (35), 43 (22)
10 (12 d)Phthalate 3,4-dihydrodiol37.676202 (M+, 100), 182 (19), 151 (65), 133 (32), 114 (1), 101 (20), 88 (8), 63 (12)
11 (6 d)3,4-Dihydroxyphthalate39.7211 (M+, 5), 195 (60), 167 (25), 146 (10), 132 (26), 117 (31), 105 (5), 90 (17), 76 (60), 63 (20), 40 (100)
12 (6 d)Carboxy-cis, cis-muconate40.023183 (M+, 15), 168 (25), 155 (20), 141 (10), 124 (21), 111 (21), 97 (20), 85 (25), 71 (20), 57 (55), 40 (100)
13 (15 d)1-Methoxy, 2-hydroxypyrene48.32247 (M+, 100), 217 (50), 201 (100), 189 (50), 174 (10), 150 (5), 100 (20), 87 (5)
14 (6 d)1-Methoxyphenanthrene38.2208 (M+, 100), 193 (80), 177 (5), 164 (30), 150 (20), 132 (32), 118 (28), 105 (39), 79 (60), 51 (30)

Retention times (RT) and, mass per charge ion (m/z), (%) abundancy. Incubation time per days (d).