作者: E. A. Maier , H. Muntau , B. Griepink
DOI: 10.1007/BF01204097
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摘要: The chemical determination of various elements in leaves or needles allows to establish the damage caused by acid deposition. To control quality such determinations Community Bureau Reference (BCR) produced two Certified Materials: Beech (CRM No. 100) and Spruce 101). After a careful preparation procedure, homogeneity study long term stability study, materials were certified for: Cl, N, P S CRM 100, Al, Ca, Mg, Mn, P, Zn 101. Indicative values on content 19 majors trace are also reported.