Publicaciones

@article{C2JA10322B,

title = {Direct determination of sulfur in solid samples by means of high-resolution continuum source graphite furnace molecular absorption spectrometry using palladium nanoparticles as chemical modifier},

author = {Martín Resano and María R. Flórez},

url = {http://dx.doi.org/10.1039/C2JA10322B},

doi = {10.1039/C2JA10322B},

year  = {2012},

date = {2012-01-01},

journal = {J. Anal. At. Spectrom.},

volume = {27},

issue = {3},

pages = {401-412},

publisher = {The Royal Society of Chemistry},

abstract = {This work investigates the potential benefits of using Pd nanoparticles, in combination with Ru as permanent modifier, for sulfur monitoring as CS by means of high-resolution continuum source graphite furnace molecular absorption spectrometry. Upon heating, these small (approx. 20 nm diameter) Pd nanoparticles are evenly distributed over the platform surface, offering a larger surface for interaction with the analyte during the drying and pyrolysis steps. In this way, a more efficient stabilization of sulfur species can be achieved. Furthermore, a similar analytical response is obtained regardless of the chemical form in which sulfur species are originally found, thus making it easier to develop quantitative analytical methods for this analyte. When using these modifiers, and under optimized working conditions, it is possible to use this technique for direct analysis of different types of solid samples (biological, petroleum coke, polyethylene and steel CRMs), thus circumventing the traditional drawbacks associated with sample digestion when sulfur determination is aimed at. Accurate results are obtained using only the central CS line found at 257.958 nm, with precision values in the 5–10% RSD range (14 ng characteristic mass; 9 ng limit of detection). Moreover, the combined use of the main six CS lines available in the spectral area simultaneously monitored by the detector permits to further improve precision to 3–5% RSD, while decreasing the limit of detection down to 3 ng (the characteristic mass is also 3 ng), which represents a relative limit of detection of approx. 1 μg g−1, as calculated for the sample with the lowest sulfur content. In all cases, straightforward calibration with aqueous standards was proved to be feasible, and the sample throughput is of 3–4 samples per hour (5 replicates per sample).},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{C1JA10193E,

title = {Laser ablation-inductively coupled plasma-mass spectrometry using a double-focusing sector field mass spectrometer of Mattauch–Herzog geometry and an array detector for the determination of platinum group metals and gold in NiS buttons obtained by fire assay of platiniferous ores},

author = {Martín Resano and Keith S. McIntosh and Frank Vanhaecke},

url = {http://dx.doi.org/10.1039/C1JA10193E},

doi = {10.1039/C1JA10193E},

year  = {2012},

date = {2012-01-01},

journal = {J. Anal. At. Spectrom.},

volume = {27},

issue = {1},

pages = {165-173},

publisher = {The Royal Society of Chemistry},

abstract = {This paper explores the potential of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) for the determination of Au, Ir, Pd, Pt, Rh and Ru in NiS buttons obtained by fire assay of platiniferous ores using a new type of ICP-MS instrument equipped with an array detector Mattauch–Herzog spectrometer. The method evaluated comprises the NiS fire assay of a representative amount of the ore sample (40–75 g), grinding of the NiS buttons subsequently obtained, pelleting of the resulting powders using polyethylene wax as a binder, and LA-ICP-MS analysis of the sample using in-house matrix-matched standards for calibration. The use of this new ICP-MS device proved very beneficial in this context, offering a remarkable level of precision (2–3% RSD for the most abundant analytes, Pt, Pd, Rh and Ru, and 6–11% RSD for Au and Ir) owing to its simultaneous capabilities and its extended linear range, which enabled an improved performance of the internal standard (61Ni). Moreover, the low level of argide-based interferences and the detection power of the instrument provided low limits of detection (10 ng g−1 level) even for those elements that could be potentially affected by ArNi+ and ArCu+ overlap in this particular matrix (Pd, Rh, Ru). The accuracy finally obtained (90% of results within 10% of the reference value, and 70% of results within 5%) is fit-for-purpose for this application. The resulting method can be thus considered very attractive as a faster and greener strategy for the control of these types of samples in the platinum group metal industry, circumventing the need for the cumbersome and environmentally unfriendly digestion procedures currently employed.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{doi:10.1177/00037028241263567,

title = {EXPRESS: Landmark Publications in Analytical Atomic Spectrometry: Fundamentals and Instrumentation Development},

author = {George C. -Y. Chan and Gary M. Hieftje and Nicoló Omenetto and Ove Axner and Arne Bengtson and Nicolas H. Bings and Michael W. Blades and Annemie Bogaerts and Mikhail A. Bolshov and José A. C. Broekaert and WingTat Chan and José M. Costa-Fernández and Stanley R. Crouch and Alessandro De Giacomo and Alessandro D’Ulivo and Carsten Engelhard and Heinz Falk and Paul B. Farnsworth and Stefan Florek and Gerardo Gamez and Igor B. Gornushkin and Detlef Günther and David W. Hahn and Wei Hang and Volker Hoffmann and Norbert Jakubowski and Vassili Karanassios and David W. Koppenaal and R. Kenneth Marcus and Reinhard Noll and John W. Olesik and Vincenzo Palleschi and Ulrich Panne and Jorge Pisonero and Steven J. Ray and Martín Resano and Richard E. Russo and Alexander Scheeline and Benjamin W. Smith and Ralph E. Sturgeon and José-Luis Todolí and Elisabetta Tognoni and Frank Vanhaecke and Michael R. Webb and James D. Winefordner and Lu Yang and Jin Yu and Zhanxia Zhang},

url = {https://doi.org/10.1177/00037028241263567},

doi = {10.1177/00037028241263567},

journal = {Applied Spectroscopy},

volume = {0},

number = {ja},

pages = {00037028241263567},

abstract = {The almost-two-centuries history of spectrochemical analysis has generated a body of literature so vast that it has become nearly intractable for experts, much less for those wishing to enter the field. Authoritative, focused reviews help to address this problem but become so granular that the overall directions of the field are lost. This broader perspective can be provided partially by general overviews but then the thinking, experimental details, theoretical underpinnings and instrumental innovations of the original work must be sacrificed. In the present compilation, this dilemma is overcome by assembling the most impactful publications in the area of analytical atomic spectrometry. Each entry was proposed by at least one current expert in the field and supported by a narrative that justifies its inclusion. The entries were then assembled into a coherent sequence and returned to contributors for a round-robin review.},

note = {PMID: 38881037},

keywords = {},

pubstate = {published},

tppubtype = {article}

}