Determination of some organic acids was analyzed by high performance liquid
chromatographic (HPLC). The thermo separation product (tsp) HPLC system
composed of autoinjecter AS 3000 and UV 6000 LP detector was set at 210 nm. The
Phenomenex® Rezex ROA organic acid column (300 x 7.8 nm) was operated at 55 °
C.
The 0.01 N H2SO4 was used as mobile phase at the flow rate of 0.5 ml /min (www,
1999).