Community Research and Development Information Service - CORDIS


Analyses of estuarine water samples are routinely carried out by a number of laboratories to monitor the level of environmental contamination by toxic substances (eg heavy metals). A series of interlaboratory studies has been organised by the Community Bureau of Reference, BCR (now renamed Standards, Measurements and Testing Programme) to improve the quality of the determinations of selected trace metals in estuarine water samples. The improvement achieved allowed the production of a reference mateiral (CRM 505) which was certified for its content of Cd, CU, Ni and Zn. Further improvements were considered to be necessary for the certification of other trace elements (eg Pb). This material was collected in the Tagus Estuary, carefully prepared (filtered and acidified) and its homogeneity and long term stability were verified. This paper presents the work performed for the certification of Cd, Cu, Ni and Zn. Indicative values are reported for As, Co, Fe, Mn, Pb and V.

Additional information

Authors: QUEVAUVILLER P, CEC Bruxelles (BE);KRAMER K J M, IMW-TNO, Laboratory for Applied Marine Research, Dan Helder (NL);VINHAS T, Instituto Hidrográfico, Lisbon (PT)
Bibliographic Reference: Article: Fresenius J Anal Chem, Vol. 354 (1996) pp. 397-404
Record Number: 199610704 / Last updated on: 1996-06-21
Original language: en
Available languages: en