Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. High-yield UV-photochemical vapor generation of iron for sample introduction with ICP-OES Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1021/ac100059bAnalytical Chemistry, 82, 7, pp. 2996Chemistry, 82, 7, pp. -3001, 2010 ABSTRACTA novel approach to the generation of volatile iron compounds (likely the pentacarbonyl) with high efficiency is described wherein solutions containing either Fe 2+ or Fe 3+ and low molecular weight organic acids such as formic, acetic or propionic are exposed to a UVsource. An optimum generation efficiency of 60 ± 2 % was achieved in 50 % formic acid at pH 2.5 with an irradiation time of 250 s by use of a 17 W low pressure mercury grid lamp. Compared to conventional solution nebulization, sensitivity and limit of detection were improved 80-and 100-fold, respectively, yielding 1620 cps per ng/ml and 0.025 ng/ml at the 238.204 nm Fe II emission line. A precision of 0.75 % RSD was achieved at

Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Versatile thin-film reactor for photochemical vapor generation Zheng, Chengbin; Sturgeon, Ralph E.; Brophy, Christine; Hou, Xiandeng http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=16335085&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=16335085&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1021/ac100229kAnalytical Chemistry, 82, 7, pp. 3086-3093, 2010-03- ABSTRACTA novel system which significantly enhances copper hydride generation efficiency was used for the determination of trace copper by coupling a flow injection system to a graphite furnace for in-situ collection of the analyte and subsequent AAS detection. A single device integrated the functions of hydride generator and gas liquid separator.Solutions of the sample, acidified to 1 % formic acid, and tetrahydroborate reductant were merged to yield a thin film wetting a reaction surface from which product vapor was efficiently liberated and transported to the heated furnace. Optimum operating conditions provided for a generation / transport / collection efficiency of 8-12%. Interferences from common transition and noble metals were effectively eliminated. A limit of detection of 60 pg ml -1 was obtained based on processing a 5 mL sample volume with a precision of better than 4% (RSD) at 1 ng mL -1 . The methodology was successfully applied to the determination of Cu in several NRCC natural w ater and biological tissue Certified Reference Materials.3

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