sampling for chemical analysis (ionic composition): Sample procedure and analysis Rolf Weller Alfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, D-27570 Bremerhaven, Germany General: [...] antarktischen Troposphäre, in Reports on Polar and Marine Research, 476, edited by F. Riemann, Alfred-Wegener-Inst. for Polar and Marine Res., Bremerhaven, 2004. Piel, C., Weller, R., Huke, M. and Wagenbach