NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=8899217&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=8899217&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/10.1039/b000496kJournal of Analytical Atomic Spectrometry, 15, 6, pp. 607-616, 2000 Full PaperAnalytical characteristics of a commercial ICP orthogonal acceleration time-of-¯ight mass spectrometer (ICP-TOFMS){ Analytical data illustrating the typical response characteristics of a commercial inductively coupled plasma orthogonal acceleration time-of-¯ight mass spectrometer (Optimass8000 ICP-oa-TOFMS, GBC Scienti®c Equipment Pty Ltd., Australia) are presented. With optimum instrument response tuned at mid-mass ( 103 Rh), limits of detection for a suite of elements representative of m/z 9±238 were estimated to be typically 1 ppt; background counts across the mass range averaged 0.5 Hz; sensitivity was 7 MHz per mgml 21 (Rh); resolution (FWHM) ranged from 500 ( 7 Li) to 2200 ( 238 U); long-term drift over 700 min was 0.7% h 21 ; abundance sensitivity was 2.8610 26 (low mass side) and 7.4610 25 (high mass side); mass bias ranged from 10% per u at 24 Mg to v1% per u at m/zw80 and isotope ratio precision was demonstrated to be limited by counting statistics when the detector was operated in the pulse counting mode. Matrix effects, while relatively insigni®cant at 30 ppm NaCl and reaching 60±80% suppression of response at 3500 ppm, had no in¯uence on the measured resolution, mass calibration or isotope ratio accuracy. The instrument faithfully recorded transient signals arising from¯ow injection sample introduction, from which isotope ratio information free of time skew could be generated.

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