v
Samples were shacked for 2 hours at 160 osc/min,
v
Finally, the aqueous layer was separated from the
crude oil and the aqueous layer analyzed from
organic acid by CE
v
v
Determination of Organic Acid Concentration
2.
In the Oil-phase layer
5ml oil(1)
10ml
0.1M
Na
2
CO
3
10% H
2
O
5ml oil(2)
10ml
0.1M
Na
2
CO
3
30% H
2
O
5ml oil(3)
10ml
0.1M
Na
2
CO
3
50% H
2
O
5ml oil(4)
10ml
0.1M
Na
2
CO
3
70% H
2
O