ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on the mechanism of atom formation in graphite furnace atomic absorption spectrometryR. E. Sturgeon, C. L. Chakrabarti, and H. LangfordCite this: Anal. Chem. 1976, 48, 12, 1792–1807Publication Date (Print):October 1, 1976Publication History Published online1 May 2002Published inissue 1 October 1976https://pubs.acs.org/doi/10.1021/ac50006a041https://doi.org/10.1021/ac50006a041research-articleACS PublicationsRequest reuse permissionsArticle...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreconcentration of trace elements from seawater with silica-immobilized 8-hydroxyquinolineR. E. Sturgeon, S. Berman, N. Willie, and J. A. H. DesaulniersCite this: Anal. Chem. 1981, 53, 14, 2337–2340Publication Date (Print):December 1, 1981Publication History Published online1 May 2002Published inissue 1 December 1981https://pubs.acs.org/doi/10.1021/ac00237a047https://doi.org/10.1021/ac00237a047research-articleACS PublicationsRequest reuse...

A new vapor generation technique utilizing UV irradiation coupled with atomic absorption for the determination of selenium in aqueous solutions is described. In presence low molecular weight organic acid solutions, inorganic selenium(IV) converted by to volatile species, which are then rapidly transported a heated quartz tube atomizer detection spectrometry. Optimum conditions photochemical and interferences from concomitant elements were investigated. Identification products using...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIdentification and quantitation of arsenic species in a dogfish muscle reference material for trace elementsDiane. Beauchemin, M. E. Bednas, S. Berman, J. W. McLaren, K. Siu, R. SturgeonCite this: Anal. Chem. 1988, 60, 20, 2209–2212Publication Date (Print):October 15, 1988Publication History Published online1 May 2002Published inissue 15 October 1988https://pubs.acs.org/doi/10.1021/ac00171a009https://doi.org/10.1021/ac00171a009research-articleACS...

Chemical vapor generation (CVG) using tetrahydroborate(III) remains the most popular and successful derivatization procedure enabling gaseous sample introduction into analytical atomic spectrometers that are routinely used for determination of trace ultratrace amounts hydride-forming elements as well Cd Hg. The number amenable to tetrahydroborate(III)-derivatization has recently been extensively enlarged. Despite its many obvious advantages, drawbacks remain, such significant interferences...

A novel and sensitive approach for the accurate precise determination of Pb in environmental samples is presented using transition metal ion-assisted photochemical vapor generation (PVG) sample introduction with multicollector inductively coupled plasma mass spectrometry (MC-ICPMS) detection. significant improvement PVG efficiency lead achieved presence ions (Co2+ Ni2+) solutions 5% (v/v) formic acid. The digests sediment or soil readily due to coexisting which facilitate reaction. method...

Ralph Sturgeon received his Ph.D. in analytical chemistry 1977 and has been with the National Research Council Canada since that time. His interests lie inorganic chemistry, comprising trace element analysis, vapor generation, organometallic speciation production of Certified Reference Materials a focus on atomic mass spectrometry measurement techniques. He published some 350 peer reviewed articles, dozen book chapters edited two books. served as Editor for Spectrochimica Acta Reviews 16...

Volatile species of the conventional hydride-forming elements (As, Bi, Sb, Se, Sn, Pb, Cd, Te), Hg, transition metals (Ni, Co, Cu, Fe), noble (Ag, Au, Rh, Pd, Pt), and nonmetals (I, S) were generated following UV irradiation their aqueous solutions to which low molecular weight carboxylic acids (formic, acetic, propionic) had been added. Free radicals arising from photodissociation latter provide a new useful alternative common methods chemical/electrochemical vapor generation techniques for...

A commercial laboratory microwave-acid digestion system employing two types of closed vessel, (A) completely and (B) pressure-relief type, was evaluated for use in sample decomposition prior to the determination trace elements marine biological tissue sediment samples. The procedure consists acid Teflon PFA vessels (with an HNO3-HClO4 mixture tissues HNO3-HF-HClO4 sediments) using microwave heating. Subsequent evaporation on a hot-plate undertaken with material. resulting solutions are...

Production and certification activities relating to the development of a new Certified Reference Material (FEBS-1) based on fish otolith matrix are described. The material was prepared from 4.5 kg dried saggital harvested red snapper (Lutjanus campechanus), ball milled sieved <200 mesh, homogenized, irradiated, bottled into 1 g aliquots certified for major, minor trace element composition using inductively coupled plasma mass spectrometry (ICP-MS), isotope dilution-ICP-MS, neutron...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of iron, manganese, and zinc in seawater by graphite furnace atomic absorption spectrometryR. E. Sturgeon, S. Berman, A. Desaulniers, D. RussellCite this: Anal. Chem. 1979, 51, 14, 2364–2369Publication Date (Print):December 1, 1979Publication History Published online1 May 2002Published inissue 1 December 1979https://pubs.acs.org/doi/10.1021/ac50050a017https://doi.org/10.1021/ac50050a017research-articleACS PublicationsRequest reuse...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of methods for the determination trace elements in seawaterR. E. Sturgeon, S. Berman, J. A. H. Desaulniers, P. Mykytiuk, W. McLaren, and D. RussellCite this: Anal. Chem. 1980, 52, 11, 1585–1588Publication Date (Print):September 1, 1980Publication History Published online1 May 2002Published inissue 1 September 1980https://pubs.acs.org/doi/10.1021/ac50061a011https://doi.org/10.1021/ac50061a011research-articleACS PublicationsRequest reuse...

Aqueous-phase chemical generation of volatile hydrides (CHG) by derivatization with borane complexes is one the most powerful and widely employed methods for determination speciation analysis trace ultratrace elements (viz. Ge, Sn, Pb, As, Sb, Bi, Se, Te, Hg, Cd, and, more recently, several transition noble metals) when coupled atomic mass spectrometric detection techniques. Analytical CHG still dominated erroneous concepts, which have been disseminated consolidated within analytical...

A novel, sensitive method is described for the accurate determination of Ni, Se, and Fe in biological tissues by isotope dilution inductively coupled plasma mass spectrometry (ID ICPMS) based on sample introduction arising from online UV photochemical vapor generation (UV-PVG). Volatile species were liberated a formic acid medium following exposure to source. Sensitivities enhanced 27- 355-fold compared those obtained using pneumatic nebulization introduction. Although precision was slightly...

Possible mechanisms are advanced to account for a number of observations/phenomena associated with the production volatile metal species arising from photochemical vapor generation in acetic and formic acid media. These systems include mercury, iodine, selenium, iron nickel as test cases which generate cold vapor, hydrides, methylated carbonylated species. A model, based on free radicals involving ligand charge transfer reductions oxidations, is consistent majority experimental data,...