Speciation of trace amounts of Sb(iii) and Sb(v) in environmental water using inductively coupled plasma mass spectrometry after magnetic solid-phase extraction with rGO/Fe₃O₄

Abstract

We developed an approach of magnetic dispersive solid-phase extraction (MSPE) based on magnetic graphene nanocomposite rGO/Fe3O4 for the determination of trace Sb(iii) and Sb(v) using inductively coupled plasma mass spectrometry (ICP-MS).

Atomic spectrometry update: review of advances in elemental speciation

“…The total Sb method was validated by the analysis of a CRM, NIST SRM 1643e (trace elements in water) and the speciation method was validated by spike recoveries, at concentrations ranging from 1 to 10 μg L −1 , from one tap water, 3 tea extracts and two honeys in which both analytes were found in all samples. In the method devised by Wang et al , 26 the Sb III was redissolved after separation and determined by ICP-MS. As total Sb was also determined, the Sb V concentration was determined by difference. To 50 mL of sample solution, adjusted to pH 9, 10 mg of reduced GO/Fe 3 O 4 (prepared in house) was added and the mixture shaken at room temperature for 30 min.…”