Table 2 Total lipid analysis of sedimentary OC for Kandal Province, Cambodia.

From: Biomarker-indicated extent of oxidation of plant-derived organic carbon (OC) in relation to geomorphology in an arsenic contaminated Holocene aquifer, Cambodia

Samplea

HMW n-alkanes (C21–35)

HMW n-alkanoic acids (C20–30)

Acid/alkane Ratioe

Referencef

Conc Sed. (ng/g)b

PropOC (mg/g)c

CPI21–35 d

Conc Sed. (ng/g)b

PropOC (mg/g)c

CPI20–30 d

LR01-6

43

3.6

2.8

39

3.27

10.0

0.48

TS

LR01-15

6.4

6.2

1.0

0.3

0.27

4.8

N/A

TS

LR01-30

6.6

9.6

1.3

1.8

2.63

3.3

N/A

TS

LR03-6

9.8

3.2

1.5

0.2

0.06

5.3

N/A

TS

LR03-15

11

26

1.3

2.3

5.64

5.3

N/A

TS

LR03-30

38

6.1

3.6

46

7.53

7.3

0.55

TS

LR05-3

8.3

4.5

1.6

3.8

2.06

3.0

N/A

TS

LR05-6

33

4.3

3.9

5.8

0.76

6.8

0.15

TS

LR05-9

13

3.4

2.6

0.8

0.20

5.0

0.06

TS

LR05-15

8.3

8.4

1.0

0.7

0.74

4.2

N/A

TS

LR05-21

23

36

2.0

16

25.4

5.9

0.41

TS

LR05-30

67

5.6

3.8

202

16.9

6.2

0.75

TS

LR05-45

13

3.8

1.4

1.1

0.32

3.3

N/A

TS

LR07-6

17

3.3

1.7

2.6

0.50

5.2

N/A

TS

LR07-15

7.2

4.8

1.3

11

7.34

6.6

N/A

TS

LR07-30

13

2.0

1.6

2.1

0.34

5.6

N/A

TS

LR09-6

54

4.3

4.6

66

5.15

6.5

0.55

TS

LR09-15

6.3

4.1

1.4

0.5

0.30

7.9

N/A

TS

LR09-21

8.5

6.0

1.4

1.1

0.76

5.9

N/A

TS

LR09-30

6.1

77

1.0

0.9

11.9

6.6

N/A

TS

LR09-45

6.6

10

1.5

0.3

0.45

4.8

N/A

TS

LR10-6

7.5

4.3

0.9

0.2

0.13

3.2

N/A

TS

LR10-9

38

20

1.0

17

8.97

2.9

N/A

TS

LR10-15

n.d.

n.d.

n.d.

2.4

1.31

5.0

N/A

TS

LR10-30

4.7

4.5

1.7

0.0

0.00

1.1

N/A

TS

LR14-6

16

10

1.1

1.2

0.79

2.5

N/A

TS

LR14-9

65

3.3

6.1

58

2.92

8.4

0.47

TS

LR14-15

40

3.2

3.5

914

73.4

12.6

0.96

TS

LR14-30

25

5.3

3.2

50

10.7

7.9

0.67

TS

SR-13

760

77

3.0

n.d.

n.d.

n.d.

n.d.

vD08

SR-19

1100

89

4.4

n.d.

n.d.

n.d.

n.d.

vD08

SR-25

74

82

2.5

n.d.

n.d.

n.d.

n.d.

vD08

SR-35

81

405

1.3

n.d.

n.d.

n.d.

n.d.

vD08

SR-51

100

200

1.3

n.d.

n.d.

n.d.

n.d.

vD08

DS-10

2100

17

4.0

n.d.

n.d.

n.d.

n.d.

vD08

DS-15

870

113

3.7

n.d.

n.d.

n.d.

n.d.

vD08

DS-23

140

350

1.8

n.d.

n.d.

n.d.

n.d.

vD08

DS-27

74

370

1.1

n.d.

n.d.

n.d.

n.d.

vD08

DS-40

51

510

1.2

n.d.

n.d.

n.d.

n.d.

vD08

DS-54

190

475

1.2

n.d.

n.d.

n.d.

n.d.

vD08

DS-60

78

78

0.9

n.d.

n.d.

n.d.

n.d.

vD08

SY-9

3059

478

7.0

1583

247

3.6

0.34

HR07

SY-28

419

599

2.3

620

886

3.0

0.60

HR07

  1. BDL Below detection limit, n.d. no data, N/A not applicable due to mature CPI.
  2. aSamples from this study labelled LRXX-## where LRXX refers to the location (see Fig. 1) and ## refers to the depth in metres. Also, samples from earlier studies labeled $$-## where $$ is the location (see Fig. 1) and ## is depth in metres.
  3. bConcentration of aforementioned lipid per mass sediment.
  4. cProportion of aforementioned lipid per mass organic carbon.
  5. dCarbon preference index of aforementioned lipid.
  6. eHMW n-alkanoic acid to Σ(HMW n-alkane ratio + HMW n-alkanoic acid).
  7. fReferences for data with the following codes: TS = This Study, vD08 = van Dongen et al.14, HR07 = Rowland et al.12.
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