Preconcentration of Nickel and Cobalt Prior to Their Determination by Graphite Furnace Atomic Absorption Spectrometry Using the Water-Soluble Polymer Poly(Vinyl Pyrrolidinone)

Recovery of nickel from aqueous samples with water-soluble carboxyl methyl cellulose–acetone system

“…This means that nickel is quantitatively recovered with high precision and the kinetics of the complex reaction is fast. The similar results were reported in other water-soluble 2+ 14.8 [33] polymer-acetone systems for the pre-concentration and separation of metals [19][20][21][22][23].…”

“…Özcan et al [20] investigated the use of polyacrylamide containing R-(+)-cystein end groups for the determination of Cu 2+ , Pb 2+ and Cr 3+ . Other water-soluble polymers such as poly(vinyl pyrrolidinone) for the determination of lead, copper, manganese, nickel and cobalt [21,22] and polyethylenimine for the determination of copper and manganese [23] had been investigated in detail. Sodium carboxyl methyl cellulose (CMC) is known to be a derivative of cellulose that is colorless, odorless, non-toxic and water soluble.…”

Enrichment/separation of cadmium(II) and lead(II) in environmental samples by solid phase extraction

“…Consequently, a preconcentration/separation process is usually required [6][7][8][9][10]. Coprecipitation [11][12][13], membrane filtration [14,15], electrodeposition [16], cloud point extraction [17] and solvent extraction [18][19][20][21] are the popular methods for the preconcentration and separation of the traces transition metal ions.…”

Extraction of Trace Cd(II) in Real Samples using Multi Walled Carbon Nanotubes Carboxylate

“…Consequently, a preconcentration/ separation process is usually required [6][7][8][9][10] . Coprecipitation [11][12][13] , membrane filtration 14,15 , electrodeposition 16 , cloud point extraction 17 and solvent extraction [18][19][20][21] are the popular methods for the preconcentration and separation of the traces transition metal ions. Solid phase extraction (SPE) of trace metal ions is also an important preconcentration/separation technique 1,[22][23][24][25] .…”