Rapid analysis of polycyclic aromatic hydrocarbons
June 4th 2010A rapid gradient HPLC method for simultaneous determination of 16 PAH according to EPA 610 method is presented. A baseline resolution for all 16 target analytes in less than 2.50 minutes could be achieved by using a KNAUER BlueOrchid PAH 50 x 2 mm column.
Matrix Elimination — In-line Removal of Chloride using InGuard Ag and Na Cartridges
June 1st 2010In ion chromatography, the presence of a large amount of matrix ions makes quantification of the target ions difficult. Selective removal of matrix ions - matrix elimination - can be performed by treating a sample with a solid-phase extractant. Halides can be removed by precipitation with silver, which is present as a counterion in a cation-exchange resin. A subsequent treatment with a cation-trapping column removes residual dissolved silver ions.