Quantitation of valproic acid in pharmaceutical preparations using dispersive liquid-liquid microextraction followed by gas chromatography-flame ionization detection without prior derivatization

2010 ◽  
Vol 2 (7) ◽  
pp. 362-366 ◽  
Author(s):  
Hamid Reza Sobhi ◽  
Amir Kashtiaray ◽  
Hadi Farahani ◽  
Farshad Abrahimpour ◽  
Ali Esrafili
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