University of North Florida
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Contact Info

Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Ryszard Lobinski

Abbrev:
Lobinski, R.
Other Names:
Address:
aCNRS EP132, He´lioparc, 2, av. Pr. Angot, 64 000 Pau, France.
Phone:
NA
Fax:
NA

Citations 4

"Determination Of Mercury In Organic Solvents And Gas Condensates By Flow-injection - Inductively Coupled Plasma Mass Spectrometry Using A Modified Total Consumption Micronebulizer Fitted With Single Pass Spray Chamber"
Spectrochim. Acta B 2006 Volume 61, Issue 9 Pages 1063-1068
Brice Bouyssiere, Yoana Nuevo Ordóñez, Charles-Philippe Lienemann, Dirk Schaumlöffel and Ryszard Łobiński

Abstract: A high-throughput flow-injection - inductively coupled plasma mass spectrometry (ICP MS) analytical method was developed for the determination of mercury in gas condensates and carbon-rich solvents. The sample (undiluted or diluted 10-fold) was introduced via a modified total consumption micronebulizer working at a flow rate of 30 µL min- 1 and fitted with a singlepass spray chamber. This low flow rate and the addition of oxygen (70 mL min- 1) assured the plasma stability and reduced the carbon build-up on the interface and on ion lenses. A limit of detection of 0.5 ng g- 1 (2.5 µL sample) was obtained owing to the reduction of dead volume and sample dispersion (peak-width was 3 s at half-height) in the liquid pass of the nebulizer. The elimination of the memory effect reduced the washout time down to 30 s which resulted in a throughput of ~60 h- 1. The method was validated by the analysis of 3 gas condensates by cold vapor atomic absorption spectrometry. © 2006.

"Speciation Analysis For Biomolecular Complexes Of Lead In Wine By Size-exclusion High-performance Liquid Chromatography-inductively Coupled Plasma Mass Spectrometry"
J. Anal. At. Spectrom. 1998 Volume 13, Issue 8 Pages 749-754
Joanna Szpunar, Patrice Pellerin, Alexei Makarov, Thierry Doco, Pascale Williams, Bernard Medina and Ryszard Lobinski

Abstract: Size-exclusion chromatography with ICP-MS detection was developed for speciation of lead in wine. The method required minimal sample preparation and allowed routine anal. of wine samples, showing the distribution of lead among biomol. compounds within 30 min. The quantification of lead bound to biomolecules was done by comparing the chromatography peak area with that of a signal obtained by flow injection ICP-MS analysis. A study carried out on a population of 20 wines of different origin showed that mineral lead on which the toxicity conclusions were based may not exist in wine. Lead was found to be associated with one major biomol. (about 10 kDa) species present in all wine samples and one to three minor compounds whose number depended on the wine sample. The dominant species which accounted for 40-95% of lead was identified as the complex formed with the dimer of a pectic polysaccharide, rhamnogalacturonan II. Other minor species with apparent molecular masses in the range 500-3000 Da were not identified.
Lead Organometallic compounds Wine SEC Mass spectrometry Speciation

"Gas Chromatography With Element Selective Detection In Speciation Analysis. Status And Future Prospects"
Analusis 1994 Volume 22, Issue 2 Pages 37-48
ŁOBINSKI R.

Abstract: A review is presented which discusses species separation by GC on columns of DB-1, HP-1 or RSL-150) followed by element-selective detection. Optical (AAS, AES, AFS) and MS detection methods are compared. Sample preparation, automation and flow injection processing are described and some practical applications are given. (67 references).
Trace elements NIST 1643 GC Mass spectrometry Spectrophotometry Spectrophotometry Spectrophotometry Speciation Review

"Species-Selective Analysis By Microcolumn Multicapillary Gas Chromatography With Inductively Coupled Plasma Mass Spectrometric Detection"
Anal. Chem. 1999 Volume 71, Issue 20 Pages 4534-4543
Isaac Rodrigueż, Sandra Mounicou, Ryszard Łobiński, Vladimir Sidelnikov, Youri Patrushev and Michiko Yamanaka

Abstract: A glass rod (5-20 cm long, 2 mm o.d.) containing more than 1200 parallel microchannels (<40 µm i.d.) was converted into a high-resolution (>100 theoretical plates cm-1) GC column by coating the inside of each channel in a way that compensated for the dispersion of the channel inner diameter. The columns were evaluated for the separation of mixtures of several organometallic (Hg, Sn, Pb) compounds prior to on-line sensitive metal-selective detection by ICPMS. Chromatographic separation conditions were optimized to enable a rapid (within a maximum 30 s) multielemental speciation analysis. Absolute detection limits were 0.1 pg for Hg, 0.05 pg for Sn, and 0.03 pg for Pb using the carrier gas flows of ~200 mL min-1. The microcolumn multicapillary GC/ICPMS developed was applied to the analysis of a number of environmental samples. The results were validated with certified reference materials for tin (BCR477, PACS-2) and mercury (DORM-1, TORT-1).