Preconcentration of trace elements on a support impregnated with sodium diethyldithiocarbamate prior to their determination by inductively coupled plasma-atomic emission spectrometry

Uncertainty Estimation for the Determination of Ni, Pb and Al in Natural Water Samples by SPE-ICP-OES

“…In solid phase extraction, various sorbents such as activated carbon, octadecyl bonded silica membrane disk, silica-gel, polyurethane foam, chelex 100 and Amberlite XAD resin family have been used for the peconcentration of trace metal ions from various media such as natural water samples, urine, geological samples [2][3][4][5][6][7]. Amberlite XAD-4 is a polymeric adsorbent with excellent physical, chemical and thermal stability and it is also stable at all pH range in aqueous solutions [8][9][10][11][12]. Analytical result must be validating because they are used as a peace of valuable information for a certain aim.…”

Preconcentration and Determination of Trace Amounts of Heavy Metals in Water Samples Using Membrane Disk and Flame Atomic Absorption Spectrometry

“…Dimethylglyoxime, 15 dithiocarbamates, 16,26 hexylthioglycolates, 17 1-(2-thiazolylazo)-2-naphthol, 18 8-hydroxyquinoline, 19 3-hydroxy-2-methyl-1,4-naphthoquinone, 20,21 neocuproine, 22 sodium di-n-popyldithiophosphinate, 23 4-(2-pyridylazo)resorcinol (PAR), 24 ammonium pyrrolidindithiocarbamate (APDC), 25 1,10-phenanthroline, 27 have all been immobilized on various substrates and used for separation and preconcentration of metal ions. This paper reports a simple and rapid analytical procedure for preconcentration and determination of copper, zinc, cadmium, cobalt, nickel and lead in natural waters, using flame atomic absorption spectrometric detection, after chelation with sodium diethyldithiocarbamate (Na-DDTC) and sorption on SPE membrane disk composed of octadecyl bonded silica.…”

“…Different experimental conditions such as the nature and amount of eluting solvent, the effects of pH, the sample volume and eluent flow rates, the amount of Na-DDTC on the extraction efficiency and break through volume have been studied. The method is an improvement of earlier reported method 26 and has been applied successfully to separation, preconcentration and determination of heavy metal ions in natural water samples. nitrate, cobalt from cobalt(II) nitrate, lead from lead(II) nitrate were prepared by dissolving appropriate amount of each salt in water.…”

Polyurethane foams as solid chromogenic reagents for diffuse reflectance spectroscopy

“…Sorption of metals with the aim of preconcentrating or separating their mixtures and subsequently determining specific elements is an important field. The adsorbed elements are eluted and analyzed by spectrophotometry, atomic absorption spectrometry, or inductively coupled plasma-atomic emission spectrometry [5,6,7,8]. PUF have also been used in flow analysis with spectrophotometric detection [9,10].…”