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dc.contributor.authorHovind, H.nb_NO
dc.contributor.otherHovind, H. - Project managernb_NO
dc.date.accessioned2014-08-01T10:41:20Z
dc.date.available2014-08-01T10:41:20Z
dc.date.issued1997-11nb_NO
dc.identifier3716nb_NO
dc.identifier.isbn82-577-3284-2nb_NO
dc.identifier.issn1894-7948nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/209518
dc.description.abstract47 laboratories in 22 countries participated in intercomparison 9711. One sample set for the determination of major ions, organic matter and aluminium fractions, were used. Based on the general target accuracy of + 20%, 78% of the results were acceptable. More than 80% of the result pairs were acceptable for chloride, sulfate, calcium, mangnesium, sodium, dissolved organic carbon and chemical oxygen demand. For pH only 43% of the result pairs were acceptable in relation to the extended target accuracy of + 0.2 units. For three analytical variables, nitrate + nitrite, reactive and non-labile aluminium, it was decided not to evaluate the reported results, because of the extreme spread between the results from the partcipants. Normalization of the methods is necessary to improve the comparability for these variables. Manual methods are generally less sesitive compared to instrumental methods, and are not always suitable for acid rain monitoring.nb_NO
dc.description.sponsorshipDepartment of Environment (MD)nb_NO
dc.publisherNorsk institutt for vannforskningnb_NO
dc.relation.ispartofseriesNIVA-rapport;3716nb_NO
dc.relation.ispartofseriesICP Waters reportnb_NO
dc.rightsNavngivelse-IkkeKommersiell-DelPåSammeVilkår 3.0 Norgenb_NO
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/no/nb_NO
dc.subjectanalysenb_NO
dc.titleIntercomparison 9711. pH, conductivity, alkalinity, nitrate + nitrite, chloride, sulfate, calcium, magnesium, sodium, potassium, total aluminium, reactive and non-labile aluminium, dissolved organic carbon, and chemical oxygen demand (ICP Waters report)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.pagenumber57nb_NO
dc.subject.keywordprøvningssammenligningnb_NO
dc.subject.keywordsur nedbørnb_NO
dc.subject.keywordkvalitetskontroll overvåkingnb_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-81006nb_NO


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