Solid phase extraction of ultra traces silver(I) using octadecyl silica membrane disks modified by 1,3-bis(2-cyanobenzene) triazene (CBT) ligand prior to determination by flame atomic absorption
作者： Mohammad Kazem Rofouei , Mahmood Payehghadr , Mojtaba Shamsipur , Asieh Ahmadalinezhad
DOI: 10.1016/J.JHAZMAT.2009.02.165
关键词:
摘要: Abstract A simple, reliable and rapid method for preconcentration determination of the ultra trace amount silver using octadecyl silica membrane disk modified by a recently synthesized triazene ligand, 1,3-bis(2-cyanobenzene)triazene (CBT), flame atomic absorption spectrometry is presented. Various parameters including pH aqueous solution, flow rates, ligand type stripping solvents were optimized. The breakthrough volume was greater than 1800 ml with an enrichment factor more 360 6.0 ng l −1 detection limit. capacity disks 5 mg found to be 1070 μg silver. effects various cationic interferences on percent recovery ion studied. successfully applied in different samples, especially presence large lead.
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