1. Preparation of the seawater reference material for trace metals, NASS-1;Berman;Mar. Pollut. Bull.,1983
2. A new photodigestion device to decompose organic matter in water;Dorten;Fres. Z. Anal. Chem.,1984
3. Certified reference materials (CRM's) for the quality of measurement;Griepink;Fres. J. Anal. Chem.,1990
4. The certification of the contents (mass fractions) of arsenic, cadmium, copper, lead, selenium and zinc in a sea lettuce (Ulva lactuca), CRM 279;Griepink,1987
5. The certification of the contents (mass fractions) of As, Cd, Cr, Cu, Fe, Hg, Mn, Pb, Se and Zn in mussel tissue (Mytilus edulis), CRM 278;Griepink,1988