Determination of Cationic Polar Pesticides in Cereals With Terri Christison
Pesticides are the chemicals that provide modern food abundance. Highly polar pesticides find widespread use, yet their detection and reliable quantitation in foods at trace levels is still a challenge for analytical science. Applying proper analytical techniques, performed with instrumentation designed specifically for ionic and highly polar chemicals, is the key. Separated in their native ionic form on a new, designed-for-purpose ion exchange column – Thermo Scientific Dionex IonPac CS21 – polar pesticides, and related highly polar compounds, can be reliably quantified by tandem mass spectrometry without a need for derivatization.
Extracted by the Quick Polar Pesticides Extraction (QuPPE) method, food matrices of baby food, flour and others were analyzed for cationic polar pesticides such as diquat, paraquat, chlormequat and mepiquat by ion chromatography coupled to a tandem mass spectrometry (IC-MS/MS).
In this Teach me in 10 episode we are joined by Terri Christison and you will learn how to:
- Keep our foods safe from harmful chemicals
- Solve separation, detection and quantitation problems for highly polar cationic pesticides
- Expand your horizons in the analytical sciences
- Application note AN000607
- Technical note TN73990
- Product specification PS73984 for Dionex IonPac CS21-fast-4µm
- Whitepaper WP73175 for IC-MS
- QuPPe Sample preparation as recommended by EURL-SRM