Emeritus Professor Marine Chemistry, Liverpool University

Professor of Geochemistry, University of Massachusetts

Universidade de São Paulo

Honorary Professor (Emeritus) of Chemistry, Andhra University

Cowie Environmental Services

Atlantic Technological University, ATU Sligo, Department of Life Sciences

Department of Earth and Environmental Sciences, The University of Manchester

Professor of Chemistry, Universidade Federal de Minas Gerais

Retd. Professor of Physical Oceanography, Cochin University of Science and Technology

Interdisciplinary Center of Marine and Environmental Research (CIIMAR), University of Porto