Abstract The origin of organic compounds detected in meteorites and comets, some which could have served as precursors life on Earth, remains an open question. aim the present study is to make one more step revealing nature composition materials extraterrestrial particles by comparing infrared spectra laboratory-made refractory residues cometary returned Stardust mission, interplanetary dust pa...

Organic compounds contained in radioactive waste can be classified into different categories. The ability of organic compounds to form stable complexes with metallic cations is widely recognized. The effect of Low Molecular Weight (LMW) organic compounds present in the wastes, or produced via their degradation on the mobilization of radionuclides under repository conditions must be assessed. Fo...