Selective solid-phase extraction of catecholamines by the chemically modified polymeric adsorbents with crown ether

Solid‐phase extraction method for determination of volatile compounds in traditional balsamic vinegar

“…Consequently, even today the extraction and concentration of volatile compounds in TBV constitute a problem that has still not been satisfactorily resolved. In particular, the high percentage of acetic acid present in TBV represents a serious problem, either for the chromatographic response, due to its elevated signal, or for the SPE extraction process, because acetic acid itself acts as a solvent [14].…”

Selective extraction and analysis of catecholamines in rat blood microdialysate by polymeric ionic liquid-diphenylboric acid-packed capillary column and fast separation in high-performance liquid chromatography-electrochemical detector

“…Several reliable methods have been developed for the extraction of CAs from complex biological matrices [5][6][7], including liquid-liquid extraction (LLE) [8,9], addition of a diphenyl borate reagent [10] and solid phase microextraction (SPME) [11,12]. SPE has been rapidly developed for pretreatment and extraction because it is more sensitive, environmentally friendly, faster and conserves sample [13].…”

“…SPE has been rapidly developed for pretreatment and extraction because it is more sensitive, environmentally friendly, faster and conserves sample [13]. Several different SPE sorbents have been reported to extract CAs from biological samples, including crown ether-modified polymers [12], calixarene [14], boronate compounds [15,16], ion exchange resin [17,18], C18 matrix [19] and alumina [20,21]. An advanced 96-well microplate extraction method using packed activated aluminum oxide was reported to decrease the plasma catecholamine analysis time and offer higher analytical specificity.…”

Evaluation of fused-core and monolithic versus porous silica-based C18 columns and porous graphitic carbon for ion-pairing liquid chromatography analysis of catecholamines and related compounds

“…In order to effectively increase the retention of ionizable polar compounds, an alternative approach to RPLC is IPLC [30]. Regarding catecholamine separation, IPLC system using sodium octyl/dodecyl sulfonate or related compounds as ion-pairing agent is probably the most popular method [13,[31][32][33][34] associated with ECD. Unfortunately, these ion-pairing reagents are not volatiles and then not compatibles with an MS detection.…”