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Fig. 3 | BMC Chemistry

Fig. 3

From: Application of gas flow headspace liquid phase micro extraction coupled with gas chromatography-mass spectrometry for determination of 4-methylimidazole in food samples employing experimental design optimization

Fig. 3

Effect of vial volume on the extraction efficiency (sample volume 2.0 mL; temperature 110.0 °C; extraction time 45 min; 1.0 g of NaCl; gas flow rate 3.0 mL min−1; string speed 200 rpm; drop volume 2.0 μL; extracting solvent, glycerin:ethylene glycol (1:1); n = 3)

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BMC Chemistry

ISSN: 2661-801X

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