Fabrication method of extracting Cadmium(II) and Lead(II) in water samples using Nano Graphene modified 2-propyl-piperidine-1-carbodithioate

International Journal of Bio-Inorganic Hybrid Nanomaterials

مقاله 6، دوره 7، شماره 3، مهر 2018، صفحه 241-253   

نوع مقاله: Research Paper

چکیده

A preconcentration/separation procedure is presented for the solid phase extraction
of trace cadmium and lead ions as their 2-propylpiperidine-1-carbodithioate (PPCD) chelates in
environmental samples on Nano Graphene, prior to cadmium and lead determinations by atomic
absorption spectrometry. The preconcentration procedure was optimized by using model solutions
containing cadmium and lead ions. The influences of pH of the model solutions, amounts of PPCD,
eluent type and volume etc. were investigated. Also the effects of the matrix constituents of the samples
were also examined. Separation of cadmium and lead from real samples was achieved quantitatively.
The procedure presented was checked with the analysis of standard reference materials (IAEA-336
Lichen and SRM 1515 Apple leaves). The preconcentration procedure was applied for the lead and
cadmium contents of the natural water samples, some salts with satisfactory results (recoveries >95%,
relative standard deviations <7%).

کلیدواژه‌ها

Atomic absorption spectrometry؛ Cadmium(II)؛ Extracting؛ Lead(II)؛ Nano Graphene؛ Preconcentration؛ Solid phase extraction