Kümmerer, Klaus; Helmers, Eckard
Hospital effluents as a source for platinum in the environmentHelmers, Eckard. Bd. 193. H. 3. Elsevier 1997 S. 179 - 184
Franzreb, M.; Kampeis, Percy; Höll, W. et al.
Magnetabscheider Deutsches Patent, DE 197 08 6971997
Franzreb, M.; Kampeis, Percy; Höll, W. et al.
Magnetabscheider Deutsches Patent, DE 197 08 7101997
Helmers, Eckard; Mergel, Norbert
Platin in belasteten GräsernMergel, Norbert. Bd. 9. H. 3. Springer 1997 S. 147 - 148
Helmers, Eckard
Platinum emission rate of automobiles with catalytic convertersHelmers, Eckard. Bd. 4. H. 2. Ecomed 1997 S. 99 - 103
Helmers, Eckard
Sampling of sea and fresh water for the analysis of trace elementsHelmers, Eckard. Springer 1997 S. 26 - 42
Helmers, E
Trace metals in suspended particulate matter of Atlantic Ocean surface water (40° N to 20° S)Helmers, E. Bd. 6. H. 44. 1997 S. 561
Osberghaus, Ulrich; Helmers, Eckard
WasteHelmers, Eckard. Springer, Berlin, Heidelberg 1997 S. 57 - 73
Helmers, Eckard
Elements accompanying platinum emitted from automobile catalyst'sHelmers, Eckard. Bd. 33. H. 3. Elsevier 1996 S. 405 - 419