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    STUDIA CHEMIA - Issue no. 3 / 2010  
         
  Article:   PRELIMINARY INVESTIGATION OF MOCS METEORITE BY LEAD ISOTOPIC RATIO USING QUADRUPOLE INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY.

Authors:  CLAUDIU TĂNĂSELIA, STANKO ILIK-POPOV, DANA POP, BÉLA ABRAHAM, CECILIA ROMAN, TRAJČE STAFILOV, LEONTIN DAVID, MARIANA UDRESCU.
 
       
         
  Abstract:  

Lead isotopic ratios (207Pb/206Pb and 208Pb/206Pb) were measured on a sample of Mocs L5-6 chondritic meteorite (from the collection of meteorites of the Museum of Mineralogy of the Babeş-Bolyai University, Cluj-Napoca, Romania), using a inductively coupled plasma quadrupole mass spectrometry method. A NIST 981 standard reference material was used for calibration and control. The obtained data for the standard reference material were within the certified range; the isotopic ratio values measured for Mocs meteorite were 0.8656 ± 0.0084 for 207Pb/206Pb and 2.1011 ± 0.0036 for 208Pb/206Pb and they were compared with other chondritic meteorites. The measured total Pb content was 0.888 ± 0.005 mg/kg. Due to isobaric interferences with 204Hg, 204Pb was excluded, but further method improvement is planned to include all lead stable isotopes due to their importance to geochronology dating.

Keywords: Pb isotopes, ICP-MS, Mocs meteorite, L5-6 chondrite

 

 
         
     
         
         
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