(Table 6) Enrichment factors of chemical elements in aerosols sampled over the North Atlantic in August 1995@en

Enrichment factor = ratio of chemical element concentration in a sample normalized with respect to Al to those in sedimentary rocks (clays) after A.P. Vinogradov (1962), Average contents of chemical elements in major types of igneous rocks of the Earth's crust, Geokhimiya, 1962, 7, 555-571.