Development of a flotation method for preconcentration-separation of trace amounts of some metal ions in plant tissues prior to their FAAS determinations

Quimica nova

Marahel, F.¹  Soylak, M.²  Montazerozohori, M.³  Ghaedi, M.³  Shokrollahi, A.³ 

[1] Omidiyeh Azad University, Omidiyeh, Iran;University of Erciyes, Kayseri, Turkey;University of Yasouj, Iran

关键词: bis(2-hydroxyacetophenone)-1;    4-butanediimine;    metal;    flotation.;   

DOI  :  10.1590/S0100-40422010000200031

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

An efficient flotationmethod based on the combination of flame atomic absorption spectrometry (FAAS)and separation and preconcentration step for determination of Cr3+,Cu 2+, Co2+, Ni2+, Zn2+, Cd 2+,Fe3+ and Pb2+ ions in various real samples by the possibilityof applying bis(2-hydroxyacetophenone)-1,4-butanediimine (BHABDI) as a new collectorwas studied. The influence of pH, amount of BHABDI as collector, sample matrix,type and amount of eluting agent, type and amount of surfactant as floatingagent, ionic strength and air flow rates i.e. variables affecting the efficiencyof the extraction system was evaluated. It is ascertained that metal ions suchas iron can be separated simultaneously from matrix in the presence of 0.012mM ligand, 0.025% (w/v) of CTAB to a test sample of 750 mL at pH 6.5. Theseions can be eluted quantitatively with 6 mL of 1.0 mol L-1 HNO3in methanol which lead to the enrichment factor of 125. The detection limitsfor analyte ions were in the range of 1.3-2.4 ng mL-1. The methodhas been successfully applied for determination of trace amounts of ions invarious real samples.

【 授权许可】

CC BY