Present study

Present study

[15]

[9]

Element

Range (%)

Mean ± Std dev

Range (%)

Mean

Carbon

55.3 - 58.7

55.34 ± 3.3

49.54 - 50.98

76.72

Oxygen

4.14 - 4.88

4.1 ± 0.25

-

-

Hydrogen

0.54 - 0.58

0.52 ± 0.02

-

1.73