The attempt of this work is to use LAMMA, a newly developed modern micro-beam analytical technique, to determin the lead isotopic composition of some grains picked out from the white aggregates in the Allende (C3V) ca...The attempt of this work is to use LAMMA, a newly developed modern micro-beam analytical technique, to determin the lead isotopic composition of some grains picked out from the white aggregates in the Allende (C3V) carbonaceous chondrite. Experimental results show that the Pb/Pb model age of the Allende calculated on the basis of the ^206Pb/^207Pb ratio is (4.56±0.008) AE, in good agreement with the value reported in literature.LAMMA provides a new and powerful tool in the analytical arsenal of trace elements and isotopic composition, due to its high sensitivity, rapid analysis and good space resolution.展开更多
文摘The attempt of this work is to use LAMMA, a newly developed modern micro-beam analytical technique, to determin the lead isotopic composition of some grains picked out from the white aggregates in the Allende (C3V) carbonaceous chondrite. Experimental results show that the Pb/Pb model age of the Allende calculated on the basis of the ^206Pb/^207Pb ratio is (4.56±0.008) AE, in good agreement with the value reported in literature.LAMMA provides a new and powerful tool in the analytical arsenal of trace elements and isotopic composition, due to its high sensitivity, rapid analysis and good space resolution.