Solid phase extraction of Hg (П) in water samples by nano-Fe3O4 encapsulated-dioctylphthalate and linked- diethylenetriamine

International Journal of Bio-Inorganic Hybrid Nanomaterials

دوره 8، شماره 4، دی 2019، صفحه 159-168   

نوع مقاله: Research Paper

چکیده

A cold vapor atomic absorption spectrophotometric (CVAAS) method for the determination
of trace Hg(II) after adsorption of magnetic nano- Fe3O4 -DOP- DTA has been developed. The as magnetic
nano- Fe3O4-DOP-DTA have a good capacity to retain Hg2+, but the raw and purified as magnetic nano-
Fe3O4-DOP- DTA are found not to adsorb Hg2+ ions. This was treated with diethylenetriamine (DTA) in
another solvent-free procedure for the formation of a novel nano-Fe3O4-DOP-DTA. Cold vapor atomic
absorption spectrometry (CVAAS) was utilized for determination of Hg2+. The effects of solution pH
solution, elution conditions on pre-concentration of trace Hg2+ were studied and the effect of interfering
ions was also investigated. Preconcentration factor was 200 .The method was successfully applied
to the recovery of Hg2+ in different type of water samples. Graphene oxide and its derivate such as
magnetic nano- Fe3O4 -DOP- DTA in this study is full of potential to use as an excellent adsorbent in the
extraction method like solid phase extraction (SPE) and solid phase micro extraction (SPME).

کلیدواژه‌ها

CVAAS؛ Dioctyl phthalate (DOP) Encapsulate nano-Fe3O4؛ Hg2+؛ Nano-Fe3O4-DOP؛ Preconcentration؛ SPE