000039797 001__ 39797
000039797 005__ 20190625111215.0
000039797 0247_ $$2DOI$$a10.1039/A901762C
000039797 0247_ $$2WOS$$aWOS:000083077900031
000039797 0247_ $$2altmetric$$aaltmetric:16806430
000039797 037__ $$aPreJuSER-39797
000039797 041__ $$aeng
000039797 082__ $$a540
000039797 084__ $$2WoS$$aChemistry, Analytical
000039797 084__ $$2WoS$$aSpectroscopy
000039797 1001_ $$0P:(DE-Juel1)VDB2662$$aBecker, J. S.$$b0$$uFZJ
000039797 245__ $$aApplication of double-focusing field ICP mass spectrometry with shielded torch using different nebulizers for ultratrace and isotope analysis of long-lived radionuclides
000039797 260__ $$aCambridge$$bChemSoc$$c1999
000039797 300__ $$a1493 - 1500
000039797 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
000039797 3367_ $$2DataCite$$aOutput Types/Journal article
000039797 3367_ $$00$$2EndNote$$aJournal Article
000039797 3367_ $$2BibTeX$$aARTICLE
000039797 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000039797 3367_ $$2DRIVER$$aarticle
000039797 440_0 $$03023$$aJournal of Analytical Atomic Spectrometry$$v14$$x0267-9477$$y9
000039797 500__ $$aRecord converted from VDB: 12.11.2012
000039797 520__ $$aThe capability of double-focusing sector field ICP-MS with a plasma-shielded torch using different nebulizers (a Meinhard nebulizer with a Scott-type spray chamber with a solution uptake rate of 1 ml min(-1); a MicroMist microconcentric nebulizer used with a minicyclonic spray chamber with a solution uptake rate of 0.085 ml min(-1); an ultrasonic nebulizer with a solution uptake rate of 2 ml min(-1); and a direct injection high-efficiency nebulizer with a solution uptake rate of 0.085 ml min(-1)) for the introduction of radioactive sample solutions into the ICP was investigated. The total amount of analyte for each long-lived radionuclide (Ra-226, Th-230, Np-237, U-238, Pu-239 and Am-241; concentration of each was 1 ng l(-1) in the aqueous solution) using different nebulizers was 5 pg for the Meinhard nebulizer, 0.4 pg for the MicroMist microconcentric nebulizer and 10 pg for the ultrasonic nebulizer. The application of the shielded torch yielded an increase in sensitivity for all these nebulizers of up to a factor of 5 compared with the original configuration without a shielded torch. Sensitivities of about 2000 MHz ppm(-1) were measured for the radionuclides investigated (except for Ra-226) using the MicroMist microconcentric nebulizer with a shielded torch. The detection limits were in the sub-pg l(-1) range and the precision ranged from 1 to 2% RSD (n=5) for the 1 ng l(-1) concentration level (0.4 pg sample size). A further increase in sensitivity for long-lived radionuclides of nearly one order of magnitude in comparison with the MicroMist microconcentric nebulizer was observed using ultrasonic nebulization, but the amount of analyte required was significantly higher (by a factor of 25). In contrast, the direct injection high-efficiency nebulizer (DIHEN) in double-focusing sector field ICP-MS (DF-ICP-MS) with a shielded torch resulted in a decrease in sensitivity in comparison with the unshielded torch because of a higher water load due to the direct injection of aqueous solution into the plasma. At low solution uptake rates (down to several mu l min(-1)), the uranium solutions were analyzed by DIHEN-ICP-MS using a double-focusing sector field instrument with higher sensitivity than quadrupole-based ICP-MS. Flow injection was used for sample introduction to measure small sample volumes of radioactive waste solutions (20 mu l). The determination of Np-237 at a concentration of 10 ng l(-1) by flow injection DF-ICP-MS was possible with a precision of 2.0% (RSD, n=5). In order to avoid mass spectral interferences and matrix effects long-lived radionuclides (e.g., of U, Th and Tc-99) were separated from the radioactive waste matrix by liquid-liquid extraction or ion exchange. The methods developed for the precise determination of the concentration and isotopic ratios of long-lived radionuclides were applied to aqueous standard solutions and radioactive wastes by double-focusing sector field ICP-MS. The precision of Pu isotopic analysis by double-focusing ICP-MS with a shielded torch was 0.2, 2 and 14% for 1000, 100 and 10 pg l(-1) (amount of analyte: 500, 50 and 5 fg), respectively.
000039797 536__ $$0G:(DE-Juel1)FUEK118$$2G:(DE-HGF)$$aEntwicklung analytischer Verfahren$$c62.10.1$$x0
000039797 588__ $$aDataset connected to Web of Science
000039797 650_7 $$2WoSType$$aJ
000039797 7001_ $$0P:(DE-Juel1)VDB2663$$aDietze, H.-J.$$b1$$uFZJ
000039797 773__ $$0PERI:(DE-600)1484654-8$$a10.1039/a901762c$$gVol. 14, p. 1493 - 1500$$p1493 - 1500$$q14<1493 - 1500$$tJournal of analytical atomic spectrometry$$v14$$x0267-9477$$y1999
000039797 8567_ $$uhttp://dx.doi.org/10.1039/A901762C
000039797 909CO $$ooai:juser.fz-juelich.de:39797$$pVDB
000039797 9131_ $$0G:(DE-Juel1)FUEK118$$bEnergietechnik$$k62.10.1$$lWerkstoffe der Energietechnik$$vEntwicklung analytischer Verfahren$$x0
000039797 9141_ $$y1999
000039797 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000039797 9201_ $$0I:(DE-Juel1)ZCH-20090406$$gZCH$$kZCH$$lZentralabteilung für Chemische Analysen$$x0
000039797 970__ $$aVDB:(DE-Juel1)52850
000039797 980__ $$aVDB
000039797 980__ $$aConvertedRecord
000039797 980__ $$ajournal
000039797 980__ $$aI:(DE-Juel1)ZEA-3-20090406
000039797 980__ $$aUNRESTRICTED
000039797 981__ $$aI:(DE-Juel1)ZEA-3-20090406
000039797 981__ $$aI:(DE-Juel1)ZCH-20090406