A membrane filtration procedure for the preconcentration and atomic absorption spectrometric determination of Pb(II), Co(II) and Fe(111) ions in natural water samples has been established. Cellulose nitrate membrane filters (0.45 mum and 47 mm diameter) were used in all experiments. The procedure is based on chelate formation of the analyte metals with 1-(2-pyridylazo) 2-naphtol (PAN) and on retention of the chelates on cellulose nitrate membrane filter. The cellulose nitrate membrane and analyte ions were completely dissolved by 500 muL of nitric acid at 85degreesC on a hood and then metal determinations were performed by flame atomic absorption spectrometry. The method was applied to natural water samples for the determination of analyte ...
A method for the preconcentration and determination of Cr(III), Co(II), Cu(II), Fe(III) and Pb(II) i...
A method for separation-preconcentration of Pb(II), Cr(III), Cu(II), Ni(Il) and Cd(II) ions by membr...
Cellulose nitrate membrane filter was used for the preconcentration-separation of Cu, Co, Cd, Pb and...
A membrane filtration procedure for the preconcentration and atomic absorption spectrometric determi...
A membrane filtration procedure for the preconcentration and atomic absorption spectrometric determi...
The preconcentration performance characteristics of cellulose nitrate membrane filter were investiga...
A simple enrichment method for trace amounts of Cu(II), Fe(III), Pb(II), Co(II) and Cr(III) has been...
The preconcentration performance characteristics of cellulose nitrate membrane filter were investiga...
The preconcentration performance characteristics of cellulose nitrate membrane filter were investiga...
A simple enrichment method for trace amounts of Cu(II), Fe(III), Pb(II), Co(II) and Cr(III) has been...
A method for separation-preconcentration of Cu(II) and Pb(III) ions by membrane filtration has been ...
A membrane filtration procedure for the preconcentration of nickel(II), cadmium(II), copper(H), coba...
A method for the preconcentration and determination of Cr(III), Co(II), Cu(II), Fe(III) and Pb(II) i...
A membrane filtration procedure based on the adsorption of 2-(5-bromo-2-pyridylazo)-5-(diethylamino)...
A method for separation-preconcentration of Pb(II), Cr(III), Cu(II), Ni(Il) and Cd(II) ions by membr...
A method for the preconcentration and determination of Cr(III), Co(II), Cu(II), Fe(III) and Pb(II) i...
A method for separation-preconcentration of Pb(II), Cr(III), Cu(II), Ni(Il) and Cd(II) ions by membr...
Cellulose nitrate membrane filter was used for the preconcentration-separation of Cu, Co, Cd, Pb and...
A membrane filtration procedure for the preconcentration and atomic absorption spectrometric determi...
A membrane filtration procedure for the preconcentration and atomic absorption spectrometric determi...
The preconcentration performance characteristics of cellulose nitrate membrane filter were investiga...
A simple enrichment method for trace amounts of Cu(II), Fe(III), Pb(II), Co(II) and Cr(III) has been...
The preconcentration performance characteristics of cellulose nitrate membrane filter were investiga...
The preconcentration performance characteristics of cellulose nitrate membrane filter were investiga...
A simple enrichment method for trace amounts of Cu(II), Fe(III), Pb(II), Co(II) and Cr(III) has been...
A method for separation-preconcentration of Cu(II) and Pb(III) ions by membrane filtration has been ...
A membrane filtration procedure for the preconcentration of nickel(II), cadmium(II), copper(H), coba...
A method for the preconcentration and determination of Cr(III), Co(II), Cu(II), Fe(III) and Pb(II) i...
A membrane filtration procedure based on the adsorption of 2-(5-bromo-2-pyridylazo)-5-(diethylamino)...
A method for separation-preconcentration of Pb(II), Cr(III), Cu(II), Ni(Il) and Cd(II) ions by membr...
A method for the preconcentration and determination of Cr(III), Co(II), Cu(II), Fe(III) and Pb(II) i...
A method for separation-preconcentration of Pb(II), Cr(III), Cu(II), Ni(Il) and Cd(II) ions by membr...
Cellulose nitrate membrane filter was used for the preconcentration-separation of Cu, Co, Cd, Pb and...