Solid Phase Extraction (SPE) of Pesticide Residues with CarbonX for QuEChERS INTRODUCTION Graphitized carbon black (GCB) is a sorbent that is widely used in solid phase extraction (SPE) to extract polar and non-polar pesticides/compounds from water samples. GCB struggles with planar pesticides such as Chlrothalonil in this type of application. CarbonX for QuEChERS on the other hand demonstrates excellent recoveries of water soluble pesticides including planar pesticides such as Chlorothalonil. 1. SAMPLES Water sample 2. SUMMARY OF PROCEDURE Extract pesticides including one planar pesticide in water [...]
CarbonX for QuEChERS Greatly Improves Planar Pesticide Recovery Currently graphitized carbon black (GCB) is generally used for dispersive solid phase extraction (dSPE) cleanup of pigmented QuEChERS samples. While this product does remove the pigments and sterols found in matrices such as spinach, it also drastically affects the recovery of planar pesticides such as Chlorothalonil, Chloropyrifos, Chloropyrifos-methyl, Folpet, and Coumaphos. The manufactured product CarbonX for QuEChERS, on the other hand, also removes the pigments and sterols during dSPE cleanup while retaining high [...]
CarbonX for QuEChERS Removes 50% More Matrix as Compared to GCB Introduction: Graphitized Carbon Black (GCB) is generally added to QuEChERS dispersive solid phase extraction (dSPE) kits when the food extract is highly pigmented. This is due to the fact that these pigments and sterols cause fouling of the liner and column as well as decreased signal to noise when quantitating samples on GC/MS and LC/MS. United Science is offering a product, CarbonX for QuEChERS, that works similarly to GCB without the [...]
In our market research, we discovered that current solutions for analytical based carbon phases did not cover the gamut of separation products required to make carbon useful. For instance, a carbon HPLC column is more useful if there is a preparative or flash columns available based on the same separation platform. Our product line covers the entire range of analytical needs from SPE to Preparative.