vSamples were shacked for 2 hours at 160 osc/min,
vFinally, 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 Na2CO3
10% H2O
5ml oil(2)
10ml
0.1M Na2CO3
30% H2O
5ml oil(3)
10ml
0.1M Na2CO3
50% H2O
5ml oil(4)
10ml
0.1M Na2CO3
70% H2O