Determination of anionic surfactants by bis(ethylenediamine)copper(II) extraction and anodic stripping voltammetry

Mercury film electrodes: developments, trends and potentialities for electroanalysis

“…234 Kinetic studies of enzyme inactivation, 235,236 the effect of metals on enzyme activity 237 and kinetic separations 238 on MFE's have been reported. MFE's have been applied to the indirect determination of surfactants, 239,240 EDTA, 241 oxygen 242 and thorium and scandium. 243 Finally, more exotic applications of mercury-coated electrodes include the determination of alkali metals (lithium, beryllium, sodium and potassium [244][245][246] ), erbium and lutetium, 247 neodymium, 248 holmium and dysprosium, 249 and, finally, europium and ytterbium by ion exchange on a Nafion-coated MFE.…”

Lab‐on‐valve for the automatic determination of the total content and individual profiles of linear alkylbenzene sulfonates in water samples

“…Methods to determine total LAS concentration in water samples can be based on titration [6], indirect atomic absorption [7], fluorescence [8] or molecular absorption spectrometry [9][10][11]. Among the last, those based on competition between an anionic chromogenic dye and the surfactant are the most frequently used due to high sensitivity, simplicity and facility for automatic implementation.…”

Screening method for linear alkylbenzene sulfonates in sediments based on water Soxhlet extraction assisted by focused microwaves with on-line preconcentration/derivatization/detection

“…Several methods based on titration [17], chromatographyfluorimetric detection [5,13,18], voltammetry [19] and spectrophotometry [20][21][22] have been reported for the determination of LAS. Between them, the spectrophotometric method is one of the most frequently used for the analysis of LAS in environmental samples, due to its high sensitivity and simplicity.…”