Separation and preconcentration system for lead and cadmium determination in natural samples using 2-aminoacetylthiophenol modified polyurethane foam

Synthesis and application of alizarin complexone functionalized polyurethane foam: Preconcentration/separation of metal ions from tap water and human urine

“…Several solid sorbents could be utilized in solid-phase extraction applications such as polyurethane foam (PUF) [3], silica gel [4], styrene-divinylbenzene [5,6], chitosan [7] and other sorbents [8]. The interesting about PUF has increased significantly, and it has been used as a solid sorbent for preconcentration and separation of a wide variety of inorganic and organic compounds in different media [9,10].…”

Coupled transport of Pb2+ through tri‐n‐octylamine‐xylene‐polypropylene supported liquid membranes

“…Various researchers have studied the extraction of lead by different techniques, like ion exchange (Inglezakis and Grigoropoulau, 2003;Kavallieratos et al, 2005), solvent extraction (Menoyo et al, 2001;Shilimkar and Anuse, 2002), cloud point methodology (Manzoori and Zadeh, 2007;Ghaedi et al, 2004) and sorption (Lamb and Nazarenko, 1997;Ghaedi et al, 2007;Burham, 2009). Various researchers have studied the extraction of lead by different techniques, like ion exchange (Inglezakis and Grigoropoulau, 2003;Kavallieratos et al, 2005), solvent extraction (Menoyo et al, 2001;Shilimkar and Anuse, 2002), cloud point methodology (Manzoori and Zadeh, 2007;Ghaedi et al, 2004) and sorption (Lamb and Nazarenko, 1997;Ghaedi et al, 2007;Burham, 2009).…”

Multi-Element Preconcentration/Separation of Some Metal Ions in Environmental Samples by Using Co-precipitation

“…Solid phase extraction, liquid-liquid extraction, ion exchange, cloud point extraction, etc. are important enrichment-separation techniques for trace levels of heavy metal ions before their quantitative determination (23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34). Some of disadvantages of these separation-preconcentration methods include a time-consuming sample treatment and usage of organic solvents at high ratios (25)(26)(27)(28)(29)(30)(31)(32)(33).…”

“…Organic and inorganic co-precipitants have been used for that purpose (32)(33)(34)(35)(36)(37)(38). Metal hydroxides are the most popular for the co-precipitation of trace heavy metal ions due to good recovery rates and sufficiently high separation factors for both alkali and alkaline earth metals.…”