Determination of fluorescent whitening agents in environmental waters by solid-phase extraction and ion pair liquid chromatography–tandem mass spectrometry

Determination of selected cardiovascular active compounds in environmental aquatic samples – Methods and results, a review of global publications from the last 10 years

“…Hydrophilic characteristic of mix mode polymers in complex samples such as influent wastewater samples can result in the co-extraction of humic and fulvic acids (Renew and Huang, 2004;Chen et al, 2006;Gomez et al, 2006;Magner et al, 2010). A reduced number of humic acids can be obtained by using the SPE procedure in natural pH in contrast to acidic pH (Nodler et al, 2010).…”

Solid phase extraction of copper(II) ions using C18-silica disks modified by oxime ligands

“…Solid phase extraction (SPE) has been applied as the excellent extraction and enrichment procedures, and it becomes an interesting technique in the cleanup of complex samples, by the matrix removal of the interfering compounds, to increase the overall sensitivity and selectivity of analytical methods [7].…”

Determination of polymer electrolyte membrane (PEM) degradation products in fuel cell water using electrospray ionization tandem mass spectrometry

“…The release of this compound with relatively high rates of recovery in the second elution step was accomplished by neutralizing the anion‐exchange sites on the sorbent material using 5% ammonium hydroxide. This shows that sulfonic acids are well retained by electrostatic interactions between the ionized sulfonic acid and the ionized amino group, as has also been reported by Chen et al 14. Overall, the extraction procedure showed high potential for the extraction of possible membrane degradation products from fuel cell water samples.…”