{"refrec":{"BRefID":221375,"RR":"<b>Goolaerts, A.; Mattielli, N.; de Jong, J.; Weis, D.; Scoates, J.S.</b> (2004). Hf and Lu isotopic reference values for the zircon standard 91500 by MC-ICP-MS. <i>Chem. Geol. 206(1-2)</i>: 1-9. <a href=\"http://dx.doi.org/10.1016/j.chemgeo.2004.01.008\" target=\"_blank\">http://dx.doi.org/10.1016/j.chemgeo.2004.01.008</a>","BEntID":213104,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Chem. Geol. 206(1-2)</i>: 1-9. <a href=\"http://dx.doi.org/10.1016/j.chemgeo.2004.01.008\" target=\"_blank\">http://dx.doi.org/10.1016/j.chemgeo.2004.01.008</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Goolaerts, A.; Mattielli, N.; de Jong, J.; Weis, D.; Scoates, J.S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Goolaerts, A. <i>et al.</i>","Englishabstract":"The Hf and Lu isotopic ratios of the zircon standard 91500 have been redefined by multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The chemical protocol consists of a high-pressure and high-temperature acid dissolution of zircon followed by optimized two-step ion-exchange chromatography with an overall recovery better than 94%. Instrumental calibration involved an extensive characterization of standard solutions for Hf [JMC-475 250 ppb: <sup>176</sup>Hf/<sup>177</sup>Hf=0.282161±16 (2 S.D.)] and Lu [JMC standard 50 ppb: <sup>175</sup>Lu/<sup>176</sup>Lu=37.72±2 (2 S.D.)]. A total of 59 Hf isotopic measurements on the zircon standard 91500, including four independent dissolutions and purifications, were carried out on two Nu Plasma MC-ICP-MS instruments. The average <sup>176</sup>Hf/<sup>177</sup>Hf is 0.282302±8 (2 S.D.) and the two MC-ICP-MS instruments give overlapping results within error. These high precision data [external error: 27 ppm (2 S.D.) for 59 measurements and 10 ppm for a single day; internal error: 10 ppm (2 S.D.)] are reproducible between duplicates and underscore the stability of the analytical protocol. The Lu isotopic composition of the zircon standard 91500 has also been redefined: <sup>175</sup>Lu/<sup>176</sup>Lu=37.74±8 (2 S.D.). With the growing use of in situ measurement techniques using MC-ICP-MS technology, such precise reference values will be important for the calibration of laser ablation analyses in the future.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Hf and Lu isotopic reference values for the zircon standard 91500 by MC-ICP-MS","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-11 01:31:47.145128","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"    Hf isotopes;     Zircon;     MC-ICP-MS;     Zircon standard 91500;     Lu isotopes","OtherDescriptors":null,"Notes":null,"AnaPub":2004,"MonPub":null,"DateUpdate":"2015-11-04","DateCreate":"2012-12-18","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000221368800001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.chemgeo.2004.01.008"},"refs":null,"anarec":{"AnaID":221375,"PubliDate":2004,"Pagination":"1-9","XtraPublOfAnaID":null,"ISBN":null,"Volume":"206","Issue":"1-2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42560,"SerRR":"Chemical Geology. 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