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dc.contributor.authorHovind, H.nb_NO
dc.contributor.otherHovind, H. - Project managernb_NO
dc.date.accessioned2014-08-01T10:47:22Z
dc.date.available2014-08-01T10:47:22Z
dc.date.issued2002-08nb_NO
dc.identifier4558nb_NO
dc.identifier.isbn82-577-4213-9nb_NO
dc.identifier.issn1894-7948nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/211777
dc.descriptionÅrsliste 2002nb_NO
dc.description.abstract79 laboratories received samples for the intercomparison 0216, and 75 laboratories in 27 countries submitted results. Two sample sets were used, one for the determination of major ions, and one for heavy metals. Based on the general target accuracy of ± 20 %, 68 % of the results were considered acceptable. The best results were reported for the analytical variables sodium, sulfate and manganese, where 88, 76 and 76 % of the results were acceptable. The worst results were observed for alkalinity, nitrate + nitrite, and lead, common for these analytical variables is that the concentrations are rather low. For pH only 58 % of the result pairs were acceptable in relation to the extended target accuracy of ± 0.2 units. Normalization of the analytical methods used is necessary to improve the comparability for pH. Determination of heavy metals was included in the intercomparison for the third time, with fairly good results for most of them. The lowest acceptance was obtained for lead, 59 %, and this may be due to the low concentrations used for the metal.nb_NO
dc.description.sponsorshipStatens forurensningstilsyn (SFT)nb_NO
dc.publisherNorsk institutt for vannforskningnb_NO
dc.relation.ispartofseriesNIVA-rapport;4558nb_NO
dc.relation.ispartofseriesICP Waters report;68/2002
dc.rightsNavngivelse-IkkeKommersiell-DelPåSammeVilkår 3.0 Norgenb_NO
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/no/nb_NO
dc.subjectkjeminb_NO
dc.titleIntercomparison 0216: pH, K25, HCO3, NO3+ NO2, Cl, SO4, Ca, Mg, Na, K, Fe, Mn, Cd, Pb, Cu,Ni and Zn (ICP Waters report 68/2002)nb_NO
dc.typeResearch reportnb_NO
dc.rights.holderNorsk institutt for vannforskning/Norwegian institute for water researchnb_NO
dc.subject.nsiVDP::Matematikk og naturvitenskap: 400nb_NO
dc.source.pagenumber69nb_NO
dc.subject.keywordprøvningssammenligningnb_NO
dc.subject.keywordsur nedbørnb_NO
dc.subject.keywordkvalitetskontrollnb_NO
dc.subject.keywordovervåkingnb_NO
dc.subject.keywordacid precipitationnb_NO
dc.subject.keywordintercomparisonnb_NO
dc.subject.keywordqualitynb_NO
dc.subject.keywordcontrolnb_NO
dc.subject.keywordmonitoringnb_NO
dc.relation.projectO-86001-1nb_NO


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