Browsing NIVA Open Access Archive by Author "Hovind, H."
Now showing items 1-20 of 106
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Analytical Chemistry intercomparison between University of La Laguna (ULL), University of Las Palmas (ULP), and Norwegian Institute for Water Research (NIVA)
Hovind, H. (NIVA-rapport;3830, Research report, 1998)As a part of the evaluation of chemical procedures applied in the baseline survey at two power plant locations at the Canary Islands, an intercomparison was organized between the University of La Lugana (ULL), the University ... -
Bestemmelse av organisk stoff i avløpsvann
Hovind, H. (NIVA-rapport;2386, Research report, 1990)Det er foretatt en vurdering av hvilken informasjon man får ved bestemmelse av kjemisk og biokjemisk oksygenforbruk samt totalt organisk karbon. Resultatene for disse tre analysevariablene er sammenlignet for ufiltrert og ... -
Bestemmelse av organisk stoff ved drifts- og utslippskontroll
Hovind, H. (NIVA-rapport;2544, Research report, 1991)Det er foretatt en sammenligning av ulike parametre for bestemmelse av organisk stoff i kommunalt avløpsvann. Som rutineparametre ved utslippskontrollen anbefales løst organisk karbon (DOC) og suspendert tørrstoff (STS). ... -
Development of an efficient water quality monitoring system for the Neris River
Traaen, T.; Giedraitis, B.; Akiniene, D.; Berge, D.; Binkauskas, B.; Borgvang, S.; Brettum, P.; Bækken, T.; Ceponiene, A.; Hovind, H.; Mackeviciene, V.; Siviene, S.; Tijunaite, R.; Tjomsland, T.; Zablodskis, E. (NIVA-rapport;3978, Research report, 1998)The main project task has been further development of the current water monitoring system in Lithuania. Neris River catshment has been the pilot study area. The work have included laboratory and field work on water chemistry, ... -
Fortolkning av forurensingsforskriftens forbehold om "uvanlige forhold" vedrørende analyseresultater
Lindholm, O.; Bomo, A.; Hovind, H.; Liltved, H.; Vogelsang, C. (NIVA-rapport;5304, Research report, 2006)Resymé NIVA har utredet sentrale spørsmål omkring begrepet ”uvanlige forhold” som brukes i forurensningsforskriften og som kan påberopes hvis et avløpsrenseanlegg ønsker å unnta en prøve fra kontrollrutinene. Det er gjort ... -
Håndbok for beregning av måleusikkerhet ved miljølaboratorier
Magnusson, B.; Näykki, T.; Hovind, H.; Krysell, M. (NIVA-rapport;5576, Research report, 2008) -
Håndbok for kjemiske laboratorier
Hovind, H. (NIVA-rapport;5322, Research report, 2006) -
Instrumentering og prøvetaking ved enkel kontroll av utslipp til luft og vann
Wathne, B.; Hovind, H. (NIVA-rapport;1970, Research report, 1987)Enkle metoder for prøvetaking og bestemmelse av forurensninger i utslipp til luft og vann er beskrevet. For utslipp til luft er det omtalt metoder for bestemmelse av utslippsvolum, nitrogenoksider, karbonmonoksid, svoveldioksyd ... -
Intercalibration 8802 (ICP Waters report)
Hovind, H. (NIVA-rapport;2153, Research report, 1988-08)Ten laboratories in nine countries participated in the second intercalibration, 8802. Based on the general target accuracies of 20%, all the results were acceptable for conductivity, nitrate, sulfate and sodium. For chloride, ... -
Intercalibration 9004. pH and alkalinity (ICP Waters report)
Hovind, H. (NIVA-rapport;2465, Research report, 1990-08)Eleven laboratories in ten countries participated in intercalibration 9004, especially designed for testing of pH and alkalinity determination. The estimate of a total error of +/- 0.2 pH units seems to be a reasonable ... -
Intercalibration 9105. pH, conductivity, alkalinity, nitrat + nitrite, chloride, sulfate, calcium, magnesium, sodium, potassium and total organic carbon (ICP Waters report)
Hovind, H. (NIVA-rapport;2591, Research report, 1991-07)21 laboratories in 15 countries participated in intercalibration 9105. Basedon the general target accuracy of +/- 20 %, 90 - 100 % of the results were acceptable for all the main components, only 0-2 result pairs lying ... -
Intercalibrition 8903. Dissolved organic carbon, and aluminium fractions (ICP Waters report)
Hovind, H. (NIVA-rapport;2238, Research report, 1989-04)Ten laboratories in ten countries participated in the third intercalibration, 8903. Based on the general target accuracies of +/- 20%, all the results were acceptable for dissolved organic carbon. Acceptable results for ... -
Intercomparison 0014: pH, Cond, HCO3, NO3+ NO2, Cl, SO4,Ca, Mg, Na, K, total-aluminium, aluminium - reactive and nonlabile, DOC, COD-Mn, Fe, Mn, Cd, Pb, Cu, Ni and Zn (ICP Waters report 55/2000)
Hovind, H. (NIVA-rapport;4281, Research report, 2000-09)71 laboratories received samples for the intercomparison 0014, and 65 laboratories in 26 countries submitted results. Three sample sets were used, one for the determination of major ions, one for organic matter and aluminium ... -
Intercomparison 0115: pH, K25, HCO3, NO3+ NO2, Cl, SO4,Ca, Mg, Na, K, total aluminium, aluminium - reactive and nonlabile, TOC, COD-Mn, Fe, Mn, Cd, Pb, Cu, Ni and Zn (ICP Waters report 64/2001)
Hovind, H. (NIVA-rapport;4416, Research report, 2001-08)77 laboratories received samples for the intercomparison 0115, and 72 laboratories in 26 countries submitted results. Three sample sets were used, one for the determination of major ions, one for organic matter and aluminium ... -
Intercomparison 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)
Hovind, H. (NIVA-rapport;4558, Research report, 2002-08)79 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 ... -
Intercomparison 0317: pH, Cond, HCO3, NO3+NO2 C1, SO4, Ca, Mg, Na, K, Fe, Mn, Cd, Pb, Cu, Ni and Zn (ICP Waters report 74/2003)
Hovind, H. (NIVA-rapport;4715, Research report, 2003-11)75 laboratories received samples for the intercomparison 0317, and 69 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 ... -
Intercomparison 0418: pH, Cond, HCO3 NO3+NO2, C1, SO4, Ca, Mg, Na, K, Fe, Mn, Cd, Pb, Cu, Ni, and Zn (ICP Waters report 78/2004)
Hovind, H. (NIVA-rapport;4875, Research report, 2004-11)68 laboratories received samples for the intercomparison 0418, and 63 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 ... -
Intercomparison 0519: pH, Cond, HCO3, NO3+NO2, C1, SO4, Ca, Mg, Na, K, Fe, Mn, Cd, Pb, Cu, Ni, and Zn (ICP Waters report 82/2005)
Hovind, H. (NIVA-rapport;5068, Research report, 2005-09)79 laboratories received samples for the intercomparison 0519, and 75 laboratories in 30 countries submitted results. Two sample sets were used, one for the determination of major ions, and one for heavy metals. Based on ... -
Intercomparison 0620: pH, Cond, HCO3, NO3+NO2, Cl, SO4, Ca, Mg, Na, K, Fe, Mn, Cd, Pb, Cu, Ni and Zn (ICP Waters report 86/2006)
Hovind, H. (NIVA-rapport;5285, Research report, 2006-10)73 laboratories received samples for the intercomparison 0620, and 67 laboratories in 26 countries submitted results. Two sample sets were used, one for the determination of major ions, and one for heavy metals. Based on ... -
Intercomparison 0721: pH, Cond, HCO3, NO3-N, C1, SO4, Ca, Mg, Na, K, Fe, Mn, Cd, Pb, Cu, Ni, and Zn (ICP Waters report 90/2007)
Hovind, H. (NIVA-rapport;5486, Research report, 2007-11)75 laboratories received samples for the intercomparison 0721, and 72 laboratories in 28 countries submitted results. Two sample sets were used, one for the determination of major ions, and one for heavy metals. Based on ...