Coprecipitation of Ni(2+), Cd(2+) and Pb(2+) for preconcentration in environmental samples prior to flame atomic absorption spectrometric determinations.
A coprecipitation procedure has been presented prior to flame atomic absorption spectrometric determination of nickel, cadmium and lead ions in environmental samples. Analyte ions were coprecipitated by using copper hydroxide precipitate. The influences of some analytical parameters like amounts of copper, sample volume, etc., on the recoveries of the analytes were investigated. The interference of other ions was negligible. Under the optimized conditions, the detection limits (3 sigma, n=15) of lead(II), nickel(II) and cadmium(II) were 7.0, 3.0 and 2.0 microg/L, respectively. The proposed method has been successfully applied for the determination of traces of Ni, Cd and Pb in environmental samples like tap water.
Soylak
Mustafa
M
Erciyes University, Faculty of Art and Science, Department of Chemistry, 38039 Kayseri, Turkey. msoylak@gmail.com
Kars
Ayse
A
Narin
Ibrahim
I
D002104:Cadmium / Q000737:chemistry*; D002498:Centrifugation; D004785:Environmental Pollutants / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007854:Lead / Q000737:chemistry*; D008956:Models, Chemical; D009532:Nickel / Q000737:chemistry*; D015203:Reproducibility of Results; D013054:Spectrophotometry, Atomic
D004785:Environmental Pollutants; D007202:Indicators and Reagents; D002104:Cadmium; D007854:Lead; D009532:Nickel