Bernd Kober

TL;DR: In this article, the internal precision of Pb isotope analyses using single-zircon evaporation in a double-filament solid source mass spectrometer was improved by combining the single grain with a suitable Pb+ emitter-bedding technique, which is most easily done by stepwise evaporating the investigated grain at temperatures of 1700-1800 K generating on the cold ionization filament a deposit of radiogenic Pb together with further elements and compounds derived directly from the crystal.

TL;DR: In this article, a technique has been developed and tested to analyse 207Pb/206Pb apparent ages by thermal evaporation of radiogenic lead directly from untreated whole zircon grains (≤0.3 mm).

TL;DR: In this article, the degree of metamictisation was estimated by means of confocal laser-Raman spectroscopic measurements, and the relationship between radiation damage, age and radionuclide content of natural zircons on a micro-scale.

TL;DR: Lead concentration and isotopic composition for 59 coal samples representing major coal deposits worldwide suggest that the PbIC in coals is strongly influenced by the depositional coal forming environment, and supports the notion that "old Pb pollution" from leaded gasoline reemitted into the atmosphere or long-range transport (i.e., from China to the western U.S.) is important.

TL;DR: In this article, Pb isotope ratios and Pb concentrations of well-dated sediments of Lake Constance, Central Europe have been analyzed using thermal ion mass spectrometry.