Alternatively for mipdatabase quick searches go here

Custom Search

Conference information: Abstracts, 15th Iranian Chemistry Congress

Abstract: Lead is present in various products (e.g. pipes, ammunition, solder, paint, petrol). The major source of lead in the environment is the use of lead as a petrol additive. Atmospheric pollution by lead has caused considerable concern in the past and many countries have phased-out the use of lead in petrol. However, lead already in the environment is cycled through the biogeochemical cycle, and lead originally released into the atmosphere has ended up in surface and ground waters. Lead can cause damage to the nervous system and the kidneys and is a suspected carcinogen. Lead in the environment is generally present as inorganic Pb2+ [1]. Lead ion imprinted polymers were synthesized by formation of complexes of lead ion with an aromatic dicarboxylicacid (DA) following copolymerizing with methacrylicacid (MA) as functional monomer and ethyleneglycoldimethacrylate (EGDMA) as cross-linking monomer using 2, 2'-azobisisobutyronitrile (AIBN) as initiator. Control polymers were prepared under identical conditions without the use of Pb2+ imprint ion. The synthesized polymers were characterized by IR spectroscopy, X-ray diffraction and thermal analysis techniques. Then various parameters that affect the preconcentration were optimized in both batch and column methods. The percent enrichment and retention capacity of prepared polymer with optimum constituents was investigated. The proposed polymer was tested for preconcentration of lead ion from ground water and other water samples [2, 3]
Template and target information: lead ion, Pb(II)