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Certified reference materials of soils and sewage sludges for the quality control of trace element environmental monitoring
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THE CERTIFIED REFERENCE MATERIALS CRM-142 R LIGHT SANDY SOIL, CRM-143 R SEWAGE-SLUDGE AMENDED SOIL AND CRM-145 R SEWAGE-SLUDGE FOR QUALITY-CONTROL IN MONITORING ENVIRONMENTAL AND SOIL POLLUTION
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Development and interlaboratory testing of aqueous and lyophilized Cr(III) and Cr(VI) reference materials
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Chromium speciation studies in human plasma and stability studies of Cr(III) and Cr(VI) species in a candidate water reference material
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INTERLABORATORY DETERMINATION OF OXYGEN IN SILICON FOR CERTIFIED REFERENCE MATERIALS
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The certification of impurities (Ag, As, Bi, Cd, Co, Cr, Fe, Mn, Ni, Pb, Sb, Se, Sn, Te and Zn) in copper. EUR 14055 EN, 1992, 78 p. Commission of the European Communities.