55248USUPELCO

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LC/MS/MS Method for Determination of Glyphosate, AMPA, and Glufosinate in Cereals

Glyphosate and related compounds are measured in oatmeal and infant cereal using ion-exchange polymer-based particles for HPLC and SPE. Low level detection was obtained.

QuEChERS Cleanup and Analysis of Veterinary Drugs in Milk by LC/MS/MS

Use QuEChERS methods to analyze samples of milk for veterinary drugs.

Pesticide Analysis in Turmeric by LC/MS/MS & GC/MS/MS

Dual-layer cartridge achieves efficient SPE clean-up for challenging pesticide residue testing in turmeric and spices.

Analysis of Persistent Organic Pollutants in Fish and Milk

Assessment of clean-up sorbents for extracting PAHs from salmon and PCBs from milk, optimized for GC analysis with MS and ECD detection.

Pesticide Residue Analysis in Ginger Powder with QuEChERS

2-layer SPE cartridge efficiently reduces background for ginger contaminant analysis.

Ion-Suppression & Phospholipid Contamination

An article focusing on ion-suppression and phospholipid contamination and some of their major causes and difficulties.

Analysis of Pesticide Residues in Pistachios Using QuEChERS Extraction and Cleanup with Supel™ QuE Z-Sep+

Pistachios 45% fat complicates pesticide analysis. But Z-Sep+ sorbent cleanup after QuEChERS extraction can reduce background for reliable results.

Comparison of QuEChERS Products for the Extraction of Planar Pesticides from Spinach

Supel™ QuE Verde combines a novel carbon with zirconia coated silica (Z-Sep+) to provide an optimum balance between planar pesticide recovery and color removal.

Vitamin D epi-Metabolites Separated with HybridSPE-Phospholipid

This Sigma-Aldrich article continues to detail new methodology for the analysis of Vitamin D metabolites using HybridSPE-Phospholipid technology.

HybridSPE-Phospholipid Technology

This Sigma-Aldrich article discusses how the HybridSPE-Phospholipid Technology works and how the phospholipids are removed.

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