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Table 5 Repeatability in 1H NMR method

From: A 1H NMR method for the estimation of hydrogen content for all petroleum products

Sample name

No. of Exp

H content (wt%)

Crude 1 C5-95

1

14.8

2

15.18

3

14.88

Crude 2 C5-95

1

14.72

2

15.28

3

14.89

Crude 3 C5-95

1

15.55

2

15.18

3

15.69

Crude 4 C5-95

1

15.00

2

15.38

3

15.49

Crude 1 149-250

1

14.05

2

14.19

3

13.91

Crude 5 149-250

1

13.95

2

14.02

3

14.09

Crude 7 149-250

1

14.45

2

14.40

3

14.55

Crude 4 149-250

1

14.27

2

14.35

3

14.41

Octadecane

1

15.23

2

15.26

3

15.24

Diesel Std

1

13.19

2

13.14

3

13.26

Ethylbenzene

1

8.72

2

8.84

3

8.73

Propylbenzene

1

10.09

2

10.03

3

10.11

Tetralin

1

8.94

2

9.04

3

8.98

Isooctane

1

16.02

2

16.01

3

16.02

Furfural

1

3.91

2

3.92

3

3.90