Condition

% C

% O

% Mn

% Mg

% S

% Si

% Fe

NS-4

4.58

6.05

1.23

0.0

0.0

0.0

88.14

NS-4 + 0.4mM Na₂S

9.08

32.79

0.0

3.81

4.17

0.0

50.15

NS-4 + 4 mM Na₂S

9.05

27.90

0.0

4.54

15.71

0.0

41.47