Infrared characterization of environmental samples by pulsed photothermal spectroscopy W. Seidel, H. Foerstendorf, K. H. Heise, R. Nicolai, A. Schamlott, J. M. Ortega, F. Glotin and R. Prazeres Eur. Phys. J. Appl. Phys., 25 1 (2004) 39-43 Published online: 02 December 2003 DOI: 10.1051/epjap:2003088