Food Packaging: Strategies for Rapid Phthalate ... - IonSense
Food Packaging: Strategies for Rapid Phthalate ... - IonSense
Food Packaging: Strategies for Rapid Phthalate ... - IonSense
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Key DART Source Parameters<br />
• Source Parameters:<br />
• Ionization gasses<br />
• N 2 (Standby)<br />
• He (Run Mode)<br />
• Temperature of ionization gas<br />
• Sample introduction speed<br />
• Ions typically observed in<br />
DART–MS mass spectra:<br />
• [M+H] + , [M–H] –<br />
• M +·, M –· (ionic compounds)<br />
• Use of dopants to promote<br />
ionization:<br />
• [M+NH4] + (ammonia)<br />
• [M+Cl] – (e.g. CH 2 Cl 2 )<br />
• [M+CF 3 COO] – (trifluoroacetic<br />
acid)<br />
Figure courtesy of Prof. Jana Hajšlová<br />
ICT Prague, Czech Republic<br />
3
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