DIRECT DETERMINATION OF LEAD ISOTOPE RATIOS BY LASER ABLATION-INDUCTIVELY COUPLED PLASMA-QUADRUPOLE MASS SPECTROMETRY IN LAKE SEDIMENT SAMPLES

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dc.contributor.author Aries S.
dc.contributor.author Freydier R.
dc.contributor.author Grezes T.
dc.contributor.author Polvé M.
dc.contributor.author Motelica-Heino M.
dc.date.accessioned 2021-03-03T03:56:29Z
dc.date.available 2021-03-03T03:56:29Z
dc.date.issued 2001
dc.identifier https://elibrary.ru/item.asp?id=27846802
dc.identifier.citation Geostandards Newsletter - The Journal of Geostandards and Geoanalysis, 2001, 25, 2-3, 387-398
dc.identifier.issn 0150-5505
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/26179
dc.description.abstract A direct method for the determination of lead isotopic ratios by laser ablation-inductively coupled plasma-quadrupole mass spectrometry (LA-ICP-QMS) is presented. Samples of lake sediments were ground and pressed as pellets before being analysed. Mass bias was corrected by analysing an external calibration sample manufactured with pure silica doped with NIST SRM 981 solution. The efficiency of the mass bias correction was checked by comparing the ICP-MS data with lead isotopic ratios determined by thermal ionisation mass spectrometry (TIMS). The average long term reproducibilities were 0.40%, 0.40%, 0.20% and 0.30% (RSD) respectively for the 206Pb/204Pb, 207Pb/204Pb, 206Pb/207Pb and 208Pb/206Pb ratios. The method was applied to the study of lake sediment samples, in order to determine the amount and origin of historical contamination by lead.
dc.title DIRECT DETERMINATION OF LEAD ISOTOPE RATIOS BY LASER ABLATION-INDUCTIVELY COUPLED PLASMA-QUADRUPOLE MASS SPECTROMETRY IN LAKE SEDIMENT SAMPLES
dc.type Статья


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