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Table 1 Physical and chemical characteristics of wells sampled at the SIReN

From: Degradation of a benzene–toluene mixture by hydrocarbon-adapted bacterial communities

Well

Layer

pH

DO (mg l−1)

Benzene (mg l−1)

Toluene (mg l−1)

Ethyl benzene

m- and p-xylene

o-xylene

Total PAHs

Total alkanes

309d

4

6.2

0.02

0.675

0.0002

12

23

11

0.14

13.3

308i

2

8.4

0.03

1.440

0.005

35

30

1

0.03

11.0

309s

1

6.1

0.00

3.607

0.003

85

33

34

3.16

12.6

DW3s

1

6.1

0.91

16.009

0.171

142

89

120

1.24

27.6

W18i

1

7.0

0.00

316.000

0.120

6,696

13

1

0.04

19.8

  1. All values are in μg l−1 except where stated
  2. Layer 1 = sand and intermittent gravel; 2 = clay; 3 = sand and gravel; 4 = sandstone
  3. DO Dissolved oxygen, PAH polyaromatic hydrocarbons
  4. Data from Shell Global Solutions measurements taken in April 2003 (G. Lethbridge, personal communication)
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Annals of Microbiology

ISSN: 1869-2044

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