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Fig. 1 | BMC Chemistry

Fig. 1

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. 1

Schematic of the GF-HS-SDME apparatus designed and used in this research. 1 10 µL microsyringe, 2 Extraction solvent, 3 N2 Gas outlet, 4 Sample vial, 5 Water bath, 6 Stir bar, 7 PTFE lined cap, 8 PTFE line, 9 Digital flow meter, 10 Gas flow controller, 11 Thermometer, 12 Sample, 13 Heater magnetic stirrer, 14 N2 Gas inlet. Insert shows positions of the microdrop of the extracting solvent in the N2 gas outlet a 0.5 cm out of the bottom, b at the bottom of the channel, c 0.5 cm inside the channel

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BMC Chemistry

ISSN: 2661-801X

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