Dorothea Marquardt

  • Citations Per Year
Learn More
The synthesis of Co-NPs and Mn-NPs by microwave-induced decomposition of the metal carbonyls Co(2)(CO)(8) and Mn(2)(CO)(10), respectively, yields smaller and better separated particles in the functionalized IL 1-methyl-3-(3-carboxyethyl)-imidazolium tetrafluoroborate [EmimCO(2)H][BF(4)] (1.6 ± 0.3 nm and 4.3 ± 1.0 nm, respectively) than in the(More)
2200 weekly samples of airborne particulate matter from 33 measuring sites have been obtained by 12 district institutes of hygiene (Gera, Chemnitz, Leipzig, Dresden, Erfurt, Frankfurt, Magdeburg, Neubrandenburg, Rostock, Cottbus, and Berlin). After pressure digestion of the impacted membrane filters the concentrations of 15 elements (Ca, Mg, Sr, Ba, Be, Fe,(More)
Carbon nanotubes and graphene have emerged as promising nanocarbon (nC) materials in various fields. However in order to benefit from their full potential, a functionalization step is usually required. For this reason, different covalent and non-covalent derivatization methods have been developed in the last few years. In this context, we have found a new(More)
Dust sediment samples had been taken continuously from 1983 to 1988 in the environment of trace element emitting industrial plants, in industrial centers, in urban regions without specific deposits, and in background regions of the GDR. After wet digestion the concentrations of 17 elements (Ca, Fe, Al, Mg, Na, P, Zn, Mn, Ti, Ba, Pb, Sr, Cu, Cr, Cd, V, Be)(More)
Sixteen new ionic liquids (ILs) with tetraethylammonium, 1-butyl-3-methylimidazolium, 3-methyl-1-octylimidazolium and tetrabutylphosphonium cations paired with 2-substituted 4,5-dicyanoimidazolate anions (substituent at C2 = methyl, trifluoromethyl, pentafluoroethyl, N,N'-dimethyl amino and nitro) have been synthesized and characterized by using(More)
On the basis of measurements of dust sediment samples, carried out from 1984 to 1988 in the environment of trace element emitting plants and industrial centers of the former GDR, the exposure of the people in the region of the ferrometallurgical plant Brandenburg (with 12 Siemens Martin furnaces) had been investigated. Samples of hair, urine and blood of(More)