Dedicated to Professor Peter Krumbiegel on the occasion of his 85th Birthday
Gerhard Strauch & Heike Reichelt
Editorial
Articles
3 - 10
Plasma amino acid pools in the umbilical cord artery show lower 15N natural isotope abundance relative to the maternal venous pools
Arnaud De Luca, Alice Küster, Illa Tea, Dominique Darmaun, Jean-Christophe Rozé, Richard Robins & Régis Hankard
11 - 34
Nitrate and ammonium differ in their impact on δ13C of plant metabolites and respired CO2 from tobacco leaves
Shiva Ghiasi, Marco M. Lehmann, Franz-W. Badeck, Jaleh Ghashghaie, Robert Hänsch, Rieke Meinen, Sebastian Streb, Meike Hüdig, Michael E. Ruckle, Dániel Á. Carrera, Rolf T. W. Siegwolf, Nina Buchmann & Roland A. Werner
35 - 52
Isotope fractionation of micropollutants during large-volume extraction: heads-up from a critical method evaluation for atrazine, desethylatrazine and 2,6-dichlorobenzamide at low ng/L concentrations in groundwater
Aileen Melsbach, Denis Pittois, Michael Bayerle, Martina Daubmeier, Armin H. Meyer, Kathrin Hölzer, Tom Gallé & Martin Elsner
53 - 66
Evaporation loss along the Calueque-Oshakati Canal in the Cuvelai-Etosha Basin (Northern Namibia): evidence from stable isotopes and hydrochemistry
Paul Koeniger, Josefina Hamutoko, Vincent E. A. Post, Matthias Beyer, Marcel Gaj, Thomas Himmelsbach & Heike Wanke
67 - 81
Effect of the El Niño–Southern Oscillation on hydrogen and oxygen isotope ratios of precipitation in Guilin, SW China