early diagenetic reactions in sediments transformation of element species in soils and sediments and natural waters intensity and rates of humification of natural organic matter natural halogenation and de-halogenation of organic molecules development of hyphenated instrumental techniques (HPLC-AAS, HPLC-ICP-AES, GC-MS) and pyrolytic methods for species analysis Noted chemists and earth scientists Leopold Gmelin Friedrich August Kekulé von Stradonitz Robert Bunsen Victor Meyer Theodor Curtius Gustav Kirchhoff Hermann von Helmholtz Emil Erlenmeyer Dmitri Mendeleev Carl Bosch Alfred Hettner Harry Rosenbusch Victor Mordechai Goldschmidt Paul Ramdohr Julia Lermotova Notes and references Heidelberg University