Shortcomings of International Standard ISO 9223 for the Classification, Determination, and Estimation of Atmosphere Corrosivities in Subtropical Archipelagic Conditions—The Case of the Canary Islands (Spain)
Juan J. Santana,
Alejandro Ramos,
Alejandro Rodriguez-Gonzalez,
Helena C. Vasconcelos,
Vicente Mena,
Bibiana M. Fernández-Pérez,
Ricardo M. Souto
Affiliations
Juan J. Santana
Department of Process Engineering, University of Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
Alejandro Ramos
Department of Process Engineering, University of Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
Alejandro Rodriguez-Gonzalez
Instituto de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria (ULPGC), 35017 Las Palmas de Gran Canaria, Spain
Helena C. Vasconcelos
Faculty of Sciences and Technology, Azores University, 9500-321 Ponta Delgada, Portugal
Vicente Mena
Department of Chemistry, University of La Laguna, 38200 La Laguna, Spain
Bibiana M. Fernández-Pérez
Department of Chemistry, University of La Laguna, 38200 La Laguna, Spain
Ricardo M. Souto
Department of Chemistry, University of La Laguna, 38200 La Laguna, Spain
The classification, assessment, and estimation of the atmospheric corrosivity are fixed by the ISO 9223 standard. Its recent second edition introduced a new corrosivity category for extreme environments CX, and defined mathematical models that contain dose−response functions for normative corrosivity estimations. It is shown here that application of the ISO 9223 standard to archipelagic subtropical areas exhibits major shortcomings. Firstly, the corrosion rates of zinc and copper exceed the range employed to define the CX category. Secondly, normative corrosivity estimation would require the mathematical models to be redefined introducing the time of wetness and a new set of operation constants.
