Research Topics
| Kevin A FrancesconiSummaryAffiliation: University of Southern Denmark Country: Denmark Publications
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Detail Information
Publications
Arsenic metabolites in human urine after ingestion of an arsenosugarKevin A Francesconi
Institute of Biology, University of Southern Denmark, 5230 Odense M, Denmark
Clin Chem 48:92-101. 2002..Arsenic-containing carbohydrates (arsenosugars) are common constituents of marine algae, including those species used as human food. The toxicology of these compounds has not been fully evaluated...- Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: a potential phytoremediator of arsenic-contaminated soilsKevin Francesconi
Institute of Biology, University of Southern Denmark, Odense
Sci Total Environ 284:27-35. 2002..With due consideration to the type of arsenic compounds present in the fern, and their water-solubility, the option of disposing high arsenic ferns at sea is raised for discussion... - Biotransformation of arsenate to the tetramethylarsonium ion in the marine polychaetes Nereis diversicolor and Nereis virensAnita E Geiszinger
Biology Institute, University of Southern Denmark, Odense
Environ Sci Technol 36:2905-10. 2002..This is the first report of significant biomethylation of arsenic to the tetramethyl stage and provides a ready explanation for the widespread occurrence of tetramethylarsonium ion in marine animals... - Determination of arsenic species: a critical review of methods and applications, 2000-2003Kevin A Francesconi
Institute of Chemistry - Analytical Chemistry, Karl-Franzens University, Universitaetsplatz 1, 8010 Graz, Austria
Analyst 129:373-95. 2004..We review recent research in the field of arsenic speciation analysis with the emphasis on significant advances, novel applications and current uncertainties... - The marine polychaete Arenicola marina: its unusual arsenic compound pattern and its uptake of arsenate from seawaterAnita E Geiszinger
Biology Institute, University of Southern Denmark, DK 5230 Odense M, Denmark
Mar Environ Res 53:37-50. 2002..with the remainder being accumulated as unchanged arsenate. None of the other arsenic compounds naturally present in A. marina increased in concentration following arsenate exposure... - Uptake and elimination of arsenobetaine by the mussel Mytilus edulis is related to salinityLone Andreasen Clowes
Institute of Biology, University of Southern Denmark, 5230 Odense M, Denmark
Comp Biochem Physiol C Toxicol Pharmacol 137:35-42. 2004..The data are consistent with a proposed role of arsenobetaine as an adventitiously acquired osmolyte, and readily explain field data for freshwater and marine animals... - Direct measurement of lipid-soluble arsenic species in biological samples with HPLC-ICPMSErnst Schmeisser
Karl-Franzens University Graz, Institute of Chemistry-Analytical Chemistry, Universitaetsplatz 1, 8010 Graz, Austria
Analyst 130:948-55. 2005.... - Application of selected reaction monitoring tandem mass spectrometry to the quantitative determination of an arsenic-containing nucleoside in a crude biological extractKevin A Francesconi
University of Crete, Department of Chemistry, Environmental Chemical Processes Laboratory, Heraklion, Greece
Analyst 129:398-9. 2004..20 microg As l(-1)) in a crude extract of kidney from the clam Tridacna derasa... - Volatile analytes formed from arsenosugars: determination by HPLC-HG-ICPMS and implications for arsenic speciation analysesErnst Schmeisser
Institute of Chemistry, Analytical Chemistry, Karl-Franzens-University, Universitaetsplatz 1, 8010 Graz, Austria
Anal Chem 76:418-23. 2004.... - Selenium metabolites in urine of cancer patients receiving L-selenomethionine at high dosesDoris Kuehnelt
Institute of Chemistry Analytical Chemistry, Karl Franzens University Graz, Universitaetsplatz 1, 8010 Graz, Austria
Toxicol Appl Pharmacol 220:211-5. 2007..These data refute the currently accepted role of TMSe as the preferred excretion metabolite when selenium exposure is high... 
Arsenic speciation in plants growing in arsenic-contaminated sitesMaria José Ruiz-Chancho
Departament de Quimica Analitica, Universitat de Barcelona, Marti i Franques 1 11, 08028 Barcelona, Spain
Chemosphere 71:1522-30. 2008..In the present study, the patterns of arsenic species varied with the plant species and much higher proportion of organoarsenicals was found in plants from the more contaminated sites...- Thio-dimethylarsinate is a common metabolite in urine samples from arsenic-exposed women in BangladeshReingard Raml
Karl Franzens University Graz, Institute of Chemistry Analytical Chemistry, Universitaetsplatz 1, 8010 Graz, Austria
Toxicol Appl Pharmacol 222:374-80. 2007..The work highlights the need for analytical methods providing specific determinations of arsenic compounds in future studies on arsenic metabolism and toxicology... - Determination of selenosugars in crude human urine using high-performance liquid chromatography/atmospheric pressure chemical ionization tandem mass spectrometrySophia Letsiou
University of Crete, Department of Chemistry, Environmental Chemical Processes Laboratory, Voutes, Heraklion 71003, Crete, Greece
Rapid Commun Mass Spectrom 21:343-51. 2007..Additionally, SeGalNH2 was detected in urine samples after Se supplementation. Finally, neutral loss scanning was explored as a possible method for the detection of unknown methyl-selenosugars... - Toxic metal species and food regulations--making a healthy choiceKevin A Francesconi
Institute of Chemistry Analytical Chemistry, Karl Franzens University Graz, 8010 Graz, Austria
Analyst 132:17-20. 2007..Some practical aspects and implications of framing food legislation in terms of metal species are presented... - Consequences of vapor enhancement on selenium speciation analysis by HPLC/ICPMSDijana Juresa
Institute of Chemistry-Analytical Chemistry, Karl-Franzens University Graz, Universitaetsplatz 1, 8010 Graz, Austria
Anal Chem 78:8569-74. 2006..In addition, it raises broader issues of the validity of the "dilute and shoot" approach to the determination of metals in clinical analysis of biological fluids... - Marked individual variability in the levels of trimethylselenonium ion in human urine determined by HPLC/ICPMS and HPLC/vapor generation/ICPMSDoris Kuehnelt
Division of Analytical Chemistry, Institute of Chemistry, Karl Franzens University Graz, Universitatsplatz 1, 8010, Graz, Austria
Anal Bioanal Chem 386:2207-12. 2006..This marked individual variability in the formation of TMSe was maintained in a duplicate investigation of urine from the same seven volunteers... - Improved chromatographic separation of thio-arsenic compounds by reversed-phase high performance liquid chromatography-inductively coupled plasma mass spectrometryReingard Raml
Karl-Franzens-University Graz, Institute of Chemistry-Analytical Chemistry, Universitaetsplatz 1, 8010 Graz, Austria
J Chromatogr A 1128:164-70. 2006..6 microg As/L based on 10 microL injection volume. Further, we have applied the method to the identification and quantification of thio-arsenic species in two standard reference materials, BCR 710 oyster tissue and NIES 18 human urine... - Accumulation and elimination of dietary arsenobetaine in two species of fish, Atlantic salmon (Salmo salar L.) and Atlantic cod (Gadus morhua L.)Heidi Amlund
National Institute of Nutrition and Seafood Research, P O Box 2029 Nordnes, 5817 Bergen, Norway
Environ Toxicol Chem 25:1787-94. 2006..The differences in arsenobetaine disposition studied in Atlantic salmon and Atlantic cod contribute to explain the differences in arsenic levels observed among marine fish... - Human metabolism of arsenolipids present in cod liverErnst Schmeisser
Institute of Chemistry-Analytical Chemistry, Karl Franzens University Graz, Universitaetsplatz 1, 8010, Graz, Austria
Anal Bioanal Chem 385:367-76. 2006.... - Arsenic fatty acids are human urinary metabolites of arsenolipids present in cod liverErnst Schmeisser
Institute of Chemistry--Analytical Chemistry, Karl-Franzens University Graz, , 8010 Graz, Austria
Angew Chem Int Ed Engl 45:150-4. 2005 - Arsenic speciation in farmed Hungarian freshwater fishCsilla Soeroes
Department of Applied Chemistry, Faculty of Food Science, Bkáe University, Villányi út 29 33, 1118 Budapest, Hungary
J Agric Food Chem 53:9238-43. 2005..The contrast between these two freshwater aquaculture species regarding total arsenic and arsenic species has relevant toxicological aspects in terms of food safety... - Novel thioarsenic metabolites in human urine after ingestion of an arsenosugar, 2',3'-dihydroxypropyl 5-deoxy-5-dimethylarsinoyl-beta-D-ribosideReingard Raml
Institute of Chemistry Analytical Chemistry, Karl Franzens University Graz, Austria
Chem Res Toxicol 18:1444-50. 2005..Cytotoxicity testing of the major metabolites DMA, oxo-DMAE, thio-DMAE, oxo-DMAA, and thio-DMAA showed that they were nontoxic even at 10 mM, except for DMA, which showed some toxic effects at 1 mM... - Thio arsenosugars in freshwater mussels from the Danube in HungaryCsilla Soeroes
Department of Applied Chemistry, Faculty of Food Science, Corvinus University, Villányi út 29 33, 1118 Budapest, Hungary
J Environ Monit 7:688-92. 2005..This is the first report of thio arsenosugars in freshwater biota and suggests that these compounds may be common and widespread naturally-occurring arsenicals... - Speciation analysis with HPLC-mass spectrometry: time to take stockKevin A Francesconi
Institute of Chemistry-Analytical Chemistry, Karl-Franzens University Graz, Universitaetsplatz 1, 8010, Graz, Austria
Analyst 130:998-1001. 2005 - Arsenic's not so bad! Research profile of Kevin A. FrancesconiKevin A Francesconi
J Environ Monit 6:94N-96N. 2004 - Nitrogen purity influences the occurrence of As+ ions in high-performance liquid chromatography/electrospray ionization mass spectrometric analysis of four common arsenosugarsDoris Kuehnelt
Institute of Chemistry, Analytical Chemistry, Karl Franzens University, Universitaetsplatz 1, 8010 Graz, Austria
Rapid Commun Mass Spectrom 17:654-9. 2003..Molecular and elemental information from one chromatographic run is a valuable tool for the characterization of unknown arsenic compounds... - Arsenic-containing long-chain fatty acids in cod-liver oil: a result of biosynthetic infidelity?Alice Rumpler
Institute of Chemistry Analytical Chemistry, Karl Franzens University Graz, Universitaetsplatz 1, 8010 Graz, Austria
Angew Chem Int Ed Engl 47:2665-7. 2008