Pressure-driven mesofluidic platform integrating automated on-chip renewable micro-solid-phase extraction for ultrasensitive determination of waterborne inorganic mercury

Vapor generation – atomic spectrometric techniques. Expanding frontiers through specific-species preconcentration. A review

“…Some of these trends will be discussed in the following sections. Liu et al [64] extracted As(III) species with a nonpolar Amberlite XAD-16 resin by using concentrated hydrochloric acid with which As(III) formed molecular covalent AsCl 3 that could be attached to the resins. The developed methodology was successfully applied to the determination of As in a high purity Sb 2 O 3 material, taking into account the matrix Sb(III) interferences.…”

Flow analysis in Brazil: contributions over the last four decades

“…In addition to collaborations with workers in Denmark and the USA, [5][6][7] ow analysis has inspired the fruitful cooperation of Brazilian workers with colleagues from Argentina, 53 Austria, 54 Canada, 55,56 Chile, 57 Cuba, 58 the UK, 59,60 Germany, 61 Greece, 62 India, 63 Italy, 64 Japan, 65 Mexico, 66 Poland, 67 Portugal, [68][69][70] Slovenia, 40 Spain, 62,[71][72][73][74] Sweden, 75 The Netherlands, 76 and Uruguay. 77…”

Integrated Lab-in-Syringe Platform Incorporating a Membraneless Gas–Liquid Separator for Automatic Cold Vapor Atomic Absorption Spectrometry

“…The LOD and minimum quantifiable concentration of mercury are up to 2 orders of magnitude better than those reported for a miniaturized SI-LOV-CV setup (LOD: 9 μg L −1 ; linear range up to 315 μg L −1 ) 8 and comparable to those of LOV platforms coupled to AFS, 10,11,19 even to those integrating sorptive microextraction on-chip. 13 Moreover, the proposed LIS/GLS-CVAAS system presents 3 orders of magnitude better detection limit and smaller dimensions, as well as a simpler setup than the commercially available flow injection mercury hydride system FI-MH-AAS (FIAS-400, Perkin Elmer). 20 The repeatability (intraday precision), given as relative standard deviation (RSD), was 3.1% at the 2.0 μg L −1 Hg(II) concentration level.…”

“…10−12 In the pursuit of simplification of vapor generation systems, membrane or membraneless gas−liquid separators have been likewise integrated or combined with SI-LOV platforms for selective isolation of low-abundance metals as evolved gases. 8,10,11,13 In the present work, the proof of concept of a miniaturized lab-in-syringe (LIS) system incorporating a membraneless gas− liquid separator (GLS), mounted on the top of a multiposition valve in upright position, is presented for automated determination of trace inorganic mercury in waters by CVAAS. To the best of our knowledge, this is the first paper reporting the combination of LIS with chemical vapor generation.…”