Flow injection on-line solid phase extractive preconcentration of palladium(II) in dust and rock samples using exfoliated graphite packed microcolumns and determination by flame atomic absorption spectrometry

Determination of Pd(II) content in catalysts and tap water samples via photoacoustic spectroscopy analysis of Pd(II)-3-[2′2′-thiazolylazo]-2,6-diaminopyridine complex on solid phase

“…A 1000 L sample is introduced using the automatic injection valve. A nitric acid solution (3%) is used as carrier to transport the sample to the manifold [26]. The atomic absorption signals are processed using a commercial AA Winlab software from PerkinElmer.…”

On-line Green Solid Phase Extraction of Trace Rare Earth Elements and Uranium in Environmental Samples and ICP OES Detection

“…28 On-line SPE mode in comparison with off-line mode has greater efficiency, lower consumption of sample and reagent, improved precision and capability of on field sampling. 29,30 On-line column pre-concentration systems coupled with ICP OES are based on retention of analytes in mini/ micro column packed with adsorbent that determines the sensitivity and selectivity of the analytical method. The choice of an adsorbent material for SPE can provide simple operation and more flexible working conditions.…”

Ultrasound-assisted supramolecular dispersive liquid–liquid microextraction based on solidification of floating organic drops for preconcentration of palladium in water and road dust samples

“…Thus, preconcentration and separation techniques are still very necessary. Different kinds of methods have been reported for separation and preconcentration of Pd(II) prior to its detection, such as solid phase extraction (SPE) [3], liquid-liquid extraction (LLE) [4], flow injection extraction (FIE) [5], cloud point extraction (CPE) [6] and dispersive liquidliquid microextraction (DLLME) [7].…”