Selective enrichment of sulfides, thiols and methylthiophosphates from water samples on metal-loaded cation-exchange materials for gas chromatographic analysis

Selective preconcentration of volatile mercaptans in small SPE cartridges: Quantitative determination of trace odor‐active polyfunctional mercaptans in wine

“…Because of this, many procedures for the quantitative determination of light mercaptans make use of derivatization strategies which are often considered more robust and accurate [23][24][25][26][27] and only in few cases selective isolations of these analytes have been developed [28][29][30]. Nevertheless, in the case of polyfunctional mercaptans the opposite is true and most of the few proposed analytical procedures are based on the selective isolation of the underivatized mercaptans [11,[31][32][33] and only some recent reports make use of derivatization procedures [34][35][36] to determine these compounds as their pentafluorobenzyl derivatives.…”

New approach on the alkylthiol determination in water byin situderivatization SPME followed by GC-ECD/NPD analysis

“…To investigate the extraction kinetics of the SPME process for the derivatized thiols from water, different extraction times (5,10,15,30,45 and 60 min) were tested at 30 C using the PDMS-DVB fibre. The extraction time profiles are shown in figure 5(a).…”

“…Despite several papers dealing with their separation, the identification and determination of volatile sulphur compounds and alkylthiols in aqueous matrices are still problematic due to the high reactivity of the latter class of analytes leading to the formation of a variety of by-products along the analytical procedure [10]. Increasing importance is being attached to the selectivity in the choice of analytical procedures in order to enhance their sensitivity, since even low levels of these compounds can cause the above-mentioned problems.…”

“…In the present work, an in situ derivatization followed by an SPME method for the alkylthiol measurement in water is developed. Although SPME has been successfully applied for a wide range of organic compounds, there are very few papers dealing with the application of SPME to the analysis of volatile sulphide compounds in aqueous samples [1,10]. The objectives of this study were to find a suitable derivatization reaction in the aqueous phase followed by an SPME preconcentration and dual GC-ECD/NPD determination.…”

Selective detection of sulfur derivatives using microfabricated tuning fork-based sensors

“…Organic Sulfur Compounds (OSCs) are commonly used as products in the manufacturing of wood pulp, fuels and detergents [10]. They are also released in various commercial processes and known to play a significant role in global temperature and acid precipitation [10].…”