Preconcentration of Mo(II) on Micro Crystalline Modified with Functionalized-Nano Graphene

International Journal of Bio-Inorganic Hybrid Nanomaterials

مقاله 5، دوره 2، شماره 4، دی 2013، صفحه 495-502   

نوع مقاله: Research Paper

چکیده

A organic-solution-processable functionalized-graphene (SPFGraphene) material has been studied on pre-concentration and determination of trace Mo(II)ions. In this process, the effects of pH solution, elution conditions on pre-concentration of trace Mo(II) were studied and the effect of interfering ions was also investigated. A selective method for the fast determination of trace amounts of Mo (II) ions in water samples has been developed. method has been developed for preconcentration of Mo on organic-solution-processable functionalized-graphene (SPFGraphene) adsorbent in the pH range 5.0–10.0, prior to its spectrophotometric determination, based on the oxidation of bromopyrogallol red at λ = 517 nm. This method makes it possible to quantitize Mo in the range of 6.9×10⁻⁹ to 2.7×10⁻⁵ M, with a detection limit (S/N = 3) of 1.78×10⁻⁹ M. This procedure has been successfully applied to determine the ultra-trace levels of Mo in the environmental samples, free from the interference of some diverse ions. The precision, expressed as relative standard deviation of three measurements is better than 3.0%.

کلیدواژه‌ها

Preconcentration؛ Micro crystalline؛ Nano Graphene؛ Mo(II)؛ SPE؛ FAAS؛ Organic-solution؛ Functionalized