|An inventory of coloured and opaque particles in sea water|
Jedwab, J. (1977). An inventory of coloured and opaque particles in sea water, in: Elskens, I. et al. (Ed.) Studie en Beheer van het Mariene Systeem: 4de Colloquium E4-77, Louvain-la-Neuve, 18 juli-5 augustus 1977, vol. 2. pp. 143-165
In: Elskens, I. et al. (Ed.) (1977). Studie en Beheer van het Mariene Systeem: 4de Colloquium E4-77, Louvain-la-Neuve, 18 juli-5 augustus 1977, vol. 2. Vrije Universiteit Brussel: Brussel. 426 pp., more
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VLIZ: Proceedings 
|Document type: Conference paper|
More than 400 membrane filters from the Atlantic and Pacific oceans have been scanned for coloured and opaque particles with a method integrating the possibilities of the light microscope, the SEM-EMP and the XRD. About thirty monomineralic types or defined species, and less than 10 types of polymineralic mixtures have been found everywhere in highly variable concentrations. Diagnostic properties and a tentative classification of all types of particles, according to two main categories (anthropogenic and natural) are presented. Copper and lead minerals (malachite, tenorite, laurionite) have been positively identified, and are especially concentrated in Atlantic waters. Technological pigments (mostly rutile) and several other anthropogenic particles have been found everywhere. Contamination of the filters during sampling is discussed in relation with these findings.