Journal of Analytical Methods in Chemistry / 2013 / Article / Fig 2

Research Article

Headspace Single-Drop Microextraction Gas Chromatography Mass Spectrometry for the Analysis of Volatile Compounds from Herba Asari

Figure 2

Comparison among different scales of n-tridecane in the extracting solvent on the relative peak area of the seven main compounds from Herba Asari. Powdered sample, 0.500 g; extraction solvent volume, 0.6 μL; particle size, 100 mesh; extraction time, 20 min, extraction temperature, 70°C; the percent between two mixed solvent, 1 : 1 (volume).