http://www.cnr.it/ontology/cnr/individuo/prodotto/ID168202

Ion chromatography performances evaluated from the third AQUACON freshwater analysis interlaboratory exercise (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Ion chromatography performances evaluated from the third AQUACON freshwater analysis interlaboratory exercise (Articolo in rivista) (literal)

Anno

2004-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1007/s00769-004-0759-4 (literal)

Alternative label

Mosello R., Tartari G.A., Marchetto A., Polesello S., Bianchi M., Muntau H. (2004)
Ion chromatography performances evaluated from the third AQUACON freshwater analysis interlaboratory exercise
in Accreditation and quality assurance; Springer, Heidelberg (Germania)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Mosello R., Tartari G.A., Marchetto A., Polesello S., Bianchi M., Muntau H. (literal)

Pagina inizio

242 (literal)

Pagina fine

246 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.springerlink.com/content/ft9j464ypvb54r3q/ (literal)

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9 (literal)

Rivista

Accreditation and quality assurance (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

4-5 (literal)

Note

ISI Web of Science (WOS) (literal)

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R. Mosello*, G.A. Tartari*, A. Marchetto*, S. Polesello**, M. Bianchi*** and H. Muntau**** *Institute of Ecosystem Study, National Research Council, Verbania Pallanza, Italy **Water Research Institute,National Research Council, Brugherio, Italy *** ECOCONSULT, Gavirate, Italy ****University of Sassari, Italy (literal)

Titolo

Ion chromatography performances evaluated from the third AQUACON freshwater analysis interlaboratory exercise (literal)

Abstract

The Environment Institute of the JRC-EC offered since 1990 assistance to member states of the EU in the frame of the \"Analytical Quality Control and Assessment Studies in the Mediterranean Basin Project\" (AQUACON). This project aimed at the identification, quantification and reduction of random and systematic errors associated with the most important branches of environmental analysis, for example water analysis, through the organization of collaborative studies. Exercises for rainwater analysis were started in 1991 and continued every year until 2000. The first surface water exercise was organized in 1996, followed by two further exercises in 1997 and 2000, which is described in the present paper. Two sample types were prepared and distributed: the first for the analysis of a series of stable parameters (K, Na, Mg, Ca, chloride, sulphate, nitrate, alkalinity, conductivity and pH) and the second for a series of suspected lower stability parameters (ammonium-nitrogen, o-phosphate, total P and total N, silicate). Two samples showing different concentration levels were prepared for each of the sample types. The variability between samples and the stability of samples in time was tested by two reference laboratories (Institute of Ecosystem Studies, Pallanza, and Environment Institute, JRC, Ispra). The reference laboratories took also the responsibility of establishing the target values and their uncertainty. From the very first exercise in 1991 the AQUACON water analysis exercises grew steadily in popularity and in the here described last exercise 224 laboratories from 30 countries around the world enrolled and 155 laboratories reported results. Results showed many outliers for ammonium and o-phosphate, especially in the low concentration sample. Several results show marked differences in the ionic balance. Youden graphs show the prevalence of systematic over random errors. (literal)

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