Abstract
Molybdenum (Mo) ions enter to human body from the diet or drinking waters and have a potentially toxic effect on humans. The thiol-functionalized mesoporous silica nanoparticles (HS-MSNPs) were used for determination and speciation of Mo (II, VI) in human biological samples by dispersive ionic liquid-micro-solid phase extraction (DIL-μ-SPE) coupled to electrothermal atomic absorption spectrometry (ET-AAS). Firstly, the mixture of HS-MSNPs (15 mg), the hydrophobic ionic liquid (1-Hexyl-3-methylimidazolium tris(pentafluoroethyl) trifluorophosphate; [HMIM][T(PFE)PF3]) and acetone injected into 10 mL of human blood and serum samples. After shaking for 5 min, the Mo(II) and Mo(VI) ions were extracted with the thiol group of MSNPs at pH 6 and 2, respectively, and collected through IL at the bottom of the conical tube by centrifuging. Then, the MO(II,VI) ions were back-extracted from HS-MSNPs with elent based on changing pH, and remained solutions were determined by ET-AAS after dilution with DW up to 0.5 mL, separately.
Highlights
Introduction transition metalMolybdenum (Mo) exists in Molybdenum as inorganic material belongs to environment with different oxidation numbers and complex compounds
The ILs as a green solvent were used for extraction or separation ions from liquid phases. The sample preparation such as liquid-liquid microextraction (LLME) [15, 17], flow injection chemiluminescence method combined with controlled potential electrolysis technique [18] and solid phase extraction based on inductively coupled plasma-optical emission spectrometry (ICP-OES (SPE) [19,20,21] reported for extraction Mo from samples
The X-ray diffraction (XRD) patterns of of MSNPs and HS- MSNPs which can be indexed as the (100), (110), (200) and (210) reflections associated with hexagonal symmetry (d110 and d200 were overlapped with each other)
Summary
Introduction transition metalMolybdenum (Mo) exists in Molybdenum as inorganic material belongs to environment with different oxidation numbers and complex compounds. The speciation of Mo(II) and Mo(VI) in human blood samples was obtained based on HSMSNPs nanostructure by DIL-μ-SPE procedure. The pH and sample volume optimizations By DIL-μ-SPE technique for determination and speciation of Mo in human blood samples, the pH must be studied and optimized.
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