Johannes Brand

This application note describes the determination of the triphenylmethane dyes Malachite Green and Crystal Violet and their metabolites from the aquaculture samples brown trout, shrimp, and tuna using dispersive SPE (dSPE) with CHROMABOND QuEChERS mixes for sample clean-up.

This application note describes the determination of pharmaceuticals from serum using solid-phase extraction (SPE) with the hydrophilic-lipophilic balanced SPE phase CHROMABOND® HLB for analyte enrichment and for sample cleanup. The eluates from SPE are finally analyzed by HPLC–MS/MS on a NUCLEOSHELL® PFP core–shell phase.

This application note describes the determination of pharmaceuticals from serum using solid-phase extraction (SPE) with the hydrophilic-lipophilic balanced SPE phase CHROMABOND® HLB for analyte enrichment and for sample cleanup. The eluates from SPE are finally analyzed by HPLC–MS/MS on a NUCLEOSHELL® PFP core–shell phase

A sensitive determination method with automated solid‑phase extraction (SPE) is presented and the recovery rates are compared with manual extraction. The automated extraction was developed with the SPE robot FREESTYLETM SPE module (LCTech GmbH). According to the European Regulation (EC) No 470/2009, CHROMABOND® HLB was applied for SPE (1). A high performance liquid chromatography tandem mass spectrometry (HPLC–MS/MS) method with the biphenyl phase NUCLEODUR® π2 was used for the subsequent analysis.