In recent years, drug use is on the rise, causing environmental pollution. Therefore, control a common practice in many laboratories. This project focuses increasing method for determining small amounts of norfloxacin aqueous and biological samples. Solid-phase extraction samples using 2-aminopyridine/graphene oxide nano-plates visible ultraviolet spectrophotometric measurements are used These ...

This application note describes the impact of toluene addition in the dispersive solid phase extraction (SPE) step on the analysis of pesticides in spinach using Agilent Bond Elut QuEChERS AOAC kits for highly pigmented fruits and vegetables. Graphitized carbon black (GCB) is required in the dispersive SPE kits in order to remove high levels of pigments from the matrix. However, it also retains...