Preparation of candidate certified reference materials for the quality control of EDTA-and acetic acid-extractable trace metal determinations in sewage sludge-amended soil and terra rossa soil |
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Authors: | Philippe Quevauviller Gemma Rauret Allan Ure Roser Rubio José-Fírmin López-Sánchez Haidé Fiedler Herbert Muntau |
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Affiliation: | (1) European Commission, Measurements and Testing Programme BCR, Rue de la Loi 200, B-1049 Brussels, Belgium;(2) Departamento de Química Analítica, Universidad de Barcelona, Avda. Diagonal 647, E-08028 Barcelona, Spain;(3) Rubislaw Den South 72, AB2 6AX Aberdeen, UK;(4) European Commission, Joint Research Centre, Environment Institute, I-21020 Ispra Varese, Italy |
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Abstract: | The determination of extractable trace metal contents in soil using single extraction procedures is currently performed in many laboratories to assess the bioavailable metal fraction (and related phytotoxic effects) and the accessability to the environment (e.g. contamination of ground waters). Owing to the need for validation of the extraction schemes used and of the analytical techniques, the EC Measurements and Testing Programme (formerly BCR) has organized a project for improving the quality of determination of extractable trace metal contents in soil, the first step being an interlaboratory study to adopt common extraction procedures and the second being a certification campaign to certify two soils for their extractable trace element contents following these procedures. This paper gives a brief overview of the project organisation and describes the preparation, homogeneity and stability studies of two soil candidate reference materials (sewage sludge-amended and terra rossa soils). |
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Keywords: | extraction soils trace elements candidate CRMs reference materials |
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