Ultrasonic-Assisted Solid-Phase Extraction Pre-concentration and Determination of Nicotinamide and Nicotinic Acid by High-Performance Liquid Chromatography Using Anthracite

2015 ◽  
Vol 8 (9) ◽  
pp. 2235-2242 ◽  
Author(s):  
Hooshang Parham ◽  
Behrooz Zargar ◽  
Farzaneh Khoshnam
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