Reviewer of Research Proposals and Scientific Articles for: NSF, NASA, DOE (USA), NERC (UK), ERC (European Research Council) German Israeli Foundation, Funda��o para a Ci�ncia e a Tecnologia (Portugal). Science Journal of Geophysical Research Journal of Atmospheric Chemistry International Journal of Mass Spectrometry International Journal of Environmental Analytical Chemistry Geophysical Research Letters Atmospheric Environment Atmospheric Chemistry and Physics Atmospheric Measurement Techniques Tellus Marine Chemistry Chemosphere Journal of Environmental Engineering Journal of Integrative Environmental Sciences Science of the Total Environment Spectrochimica Acta