Table 1 Chemical speciation (%) of SQT emissions from Amazonian soils

β-caryophyllene

87-44-5

0.9 (0.9)

3.4 (0.2)

10.4 (3.2)

3 (0.4)

40.4 (17.4)

3.1

60.5 (38.4)

4.5 (3.6)

aromadendrene

489-39-4

0.3 (0.3)

1.6 (0.03)

0.4 (0.2)

1.4 (1.4)

n.d.

1.1

n.d.

0.2 (0.2)

α-humulene

6753-98-6

n.d.

0.2 (0.01)

2.1 (0.6)

1.7 (0.4)

0.7 (1.2)

0.3

14.5 (28)

0.5 (0.7)

α-gurjunene

489-40-7

37.7 (13.5)

43.6 (8.5)

42.5 (8.4)

11.5 (4.9)

0.5 (1)

36.4

2.7 (3.8)

9.2 (11)

b-farnesene

18794-84-8

n.d.

n.d.

1 (0.1)

n.d.

n.d.

n.d.

14.8 (32)

n.d.

Isocaryophyllene

118-54-0

n.d.

n.d.

0.2 (0.2)

n.d.

n.d.

n.d.

1.8 (7.1)

n.d.

β-cubebene

13744-15-5

1381

2.1 (1.2)

5.9 (1.7)

3.1 (1.8)

17 (2.7)

27 (13.5)

7.3.

1.5 (2.1)

27 (18.6)

β-elemene

515-13-9

1392

n.d.

n.d.

1.7 (1.3)

n.d.

n.d.

n.d.

n.d.

n.d.

α-bergamontene

17699-05-7

1407

0.2 (0.3)

0.3 (0.3)

n.d.

3 (0.9)

5.9 (5.4)

n.d.

3.9 (15.8)

0.5 (0.7)

α-cedrene

469-61-4

1415

0.3 (0.3)

1.3 (0.3)

n.d.

1.3 (0.02)

0.1 (0.3)

0.5

n.d.

n.d.

β-gurjunene

17334-55-3

1428

2.9 (1.2)

7.4 (4.6)

n.d.

0.7 (0.7)

0.1 (0.3)

15.4

n.d.

2.2 (2.8)

α-himachalene

3853-83-6

1447

50.8 (11.8)

28.8 (1)

37.8 (8)

40.2 (12.3)

14.1 (23.8)

28.8

0.3 (1.2)

52 (26.7)

β-humulene

116-04-01

1454

0.9 (1)

1.4 (0.04)

n.d.

0.3 (0.3)

n.d.

1.1

n.d.

0.3 (0.5)

γ-gurjunene

22567-17-85

1469

2.9 (4.9)

2.5 (0.5)

n.d.

11.6 (11.6)

10.8 (18.5)

3.2

n.d.

0.9 (1.2)

α-farnesene

26560-14-5

1477

0.3 (0.4)

0.4 (0.02)

n.d.

8.3 (3.5)

0.2 (0.7)

0.3

n.d.

2.4 (2.7)

β-selinene

17066-67-0

1478

0.7 (0.8)

3.1 (0.2)

0.7 (0.1)

n.d.

n.d.

2.2

n.d.

0.3 (0.5)