By a News Reporter-Staff News Editor at Science Letter -- New research on Acrylates is the subject of a report. According to news reporting originating in Berkeley, California, by NewsRx journalists, research stated, "Simple devices for the adsorption and preconcentration of metal ions comprising various monolithic polymers have been prepared by in situ polymerization within the 5.5 cm long and 5.6 mm i.d. polypropylene syringes. Poly(glycidyl methacrylate-co-ethylene dimethacrylate) monolith was modified with ethylenediamine to obtain the chelating material."
The news reporters obtained a quote from the research from EO Lawrence Berkeley National Laboratory, "The poly(butyl methacrylate-co-ethylene dimethacrylate) and poly(lauryl methacrylate-co-ethylene dimethacrylate) monoliths were first photografted with glycidyl methacrylate prior to functionalization with ethylenediamine. Alternatively, other chelating functionalities including poly(ethylene imines) varying in molecular weight and shape (linear and branched) as well as lysozyme were also attached to the monolithic supports. We found that the poly(glycidyl methacrylate-co-ethylene dimethacrylate) monolith functionalized with ethylenediamine exhibited the best chelating properties characterized with rapid adsorption and a capacity of 111.2 mg/g (537 mu mol/g) for Pb2+, 38.1 mg/g (649 mu mol/g) for Ni2+, 69.9 mg/g (1100 mu mol/g) for Cu2+, and 188.9 mg/g (3633 mu mol/g) for Cr3+. The very fast desorption was then achieved using 1.0 mol/L HNO3 as the eluent."
According to the news reporters, the research concluded: "An enrichment factor of 300 was observed for metal ions adsorbed from solutions containing 2 ppb of the metal."
For more information on this research see: Polymer monoliths with chelating functionalities for solid phase extraction of metal ions from water. Journal of Chromatography A, 2014;1343():128-134. Journal of Chromatography A can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Chromatography A - www.elsevier.com/wps/product/cws_home/502688)
Our news correspondents report that additional information may be obtained by contacting H.X. Wang, EO Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720, United States. Additional authors for this research include H.Y. Zhang, Y.Q. Lv, F. Syec and T.W. Tan (see also Acrylates).
Keywords for this news article include: Alkenes, Berkeley, Ethylenes, California, United States, Methacrylates, North and Central America
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