Browsing Norsk institutt for vannforskning by Subject "quality"
Now showing items 1-20 of 61
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Bakgrunnsnivåer av metaller i saltvannsfisk
(NIVA-rapport;2051, Research report, 1987)Litteraturdata om tilnærmet naturlige nivåer av metaller i filet, lever og gjeller av saltvannsfisk er sammenstilt med henblikk på å tjene som referanse ved undersøkelser i forurensede fjorder og som underlag for arbeid ... -
Begroing/beleggdannelse i vannforsyningsnettet til Trondheim kommune. Orienterende undersøkelser i 1999
(NIVA-rapport;4136, Research report, 1999)Problemer med høye verdier av kimtall (v/20°C, 200-300 pr. ml) i deler av vannforsyningsnettet til Trondheim kommune ble registrert i første halvår 1999. Orienterende undersøkelser for å belyse årsaker og virkninger i denne ... -
BEKKIS-prosjektet Årsrapport 1994
(NIVA-rapport;3193, Research report, 1995)BEKKIS-prosjektet er et landsomfattende miljøundervisningsprosjekt der elever i grunnskolen skal lære om naturforholdene og undersøke miljøtilstanden i et vassdrag i nærmiljøet. Dyr, planter vannkvalitet, brukerinteresser, ... -
BEKKIS-prosjektet. Årsrapport 1995. (The BEKKIS-project on environmental education. Annual report 1995)
(NIVA-rapport;3459, Research report, 1996)Denne rapporten omhandler de viktigste prosjektaktivitetene i BEKKIS-prosjektet i 1995. Deltagerantallet har avtatt til 43 skoler i 1995 fra 70 i 1994, og databasen har vært ute av drift pga. flytting og omorganisering. ... -
BEKKIS-prosjektet. Årsrapport 1996
(NIVA-rapport;3634, Research report, 1997)Denne rapporten omhandler de viktigste prosjektaktivitetene i BEKKIS-prosjektene i 1996. Deltakerantallet har avtatt til 28 skoler i 1996 fra 43 i 1995, trolig pga utilstrekkelig informasjon til skolene, og databasen har ... -
Evaluering av langtidsprogram for overvåking av miljøforholdene i kystvannet i Bohuslän
(NIVA-rapport;3640, Research report, 1997)NIVA har evaluert langtidsprogrammet for miljøovervåking som gjennomføres av VVF O-län langs Bohuslänkysten. Evalueringen skal danne et av grunnlagene for revisjon av programmet i 1977. Programmet er meget omfattende i ... -
Forsøk med lagring av levende europeisk flatøsters (Ostrea edulis)
(NIVA-rapport;3693, Research report, 1997)I dette prosjektet er det utført forsøk med lagring av levende europeisk flatøsters (Ostrea edulis) i åpne anlegg (gjennomstrømningstanker) og lukkede anlegg (100% resirkuleringstanker). Tetthet og skjellenes plassering ... -
Indicator species index for assessing benthic ecological quality in marine waters of Norway
(NIVA-rapport;4548, Research report, 2002)An indicator species index (ISI) for assessing ecological benthic quality is presented. Development of the index was based on data from Norwegian soft-bottom fauna stations. Different species react differently to detrimental ... -
Intercalibration 9307. pH, conductivity, alkalinity, nitrate + nitrite, chloride, sulfatw, calcium, magnesium, sodium, potassium, total aluminium, reactive and non-labile aluminium, dissolved organic carbon, and chemical oxygen demand (ICP Waters report)
(NIVA-rapport;2948, Research report, 1993-09)26 laboratories in 19 countries participated in intercalibration 9307. Based on the general target accuracy of +29%, 81% of the results were accceptable. However, for pH only 52% of the result pairs were acceeptable in ... -
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)
(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)
(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)
(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)
(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 9408. pH, conductivity, alkalinity, nitrate + nitrite, chloride, sulfate, calcium, magnesium, sodium, potassium, total aluminium, dissolved organic carbon, and chemical oxygen demand (ICP Waters report)
(NIVA-rapport;3142, Research report, 1994-10)26 laboratories in 17 countries participated in intercomparison 9408. Based on the general target accuracy of +-20%, 81% of the results were acceptable. However, for pH only 54% and 59% of the result pairs in the two sample ... -
Intercomparison 9509. 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)
(NIVA-rapport;3331, Research report, 1995-10)46 laboratories in 21 countries participated in intercomparison 9509. Two sample sets, one for the major ions and one for organic matter and aluminium fractions, were used. Based on the general target accuracy of + 20 %, ... -
Intercomparison 9610, 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)
(NIVA-rapport;3550, Research report, 1996-10)36 laboratories in 21 countries participated in intercomparison 9610. Two sample sets, one for the major ions and one for organic matter and aluminium fractions, were used. Based on the general target accuracy of + 20%, ... -
Intercomparison 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)
(NIVA-rapport;3716, Research report, 1997-11)47 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%, ... -
Intercomparison 9812. 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 49/1998)
(NIVA-rapport;3939, Research report, 1998-10)43 laboratories in 20 countries participated in intercomparison 9812. One sample set for the determination of major ions, organic matter and aluminium fractions, were used. Based on the general target accuracy of * 20 %, ... -
Intercomparison 9913 of the International Cooperative Programme on Assessment and Monitoring of Acidification of Rivers and Lakes (ICP Waters report 51/1999)
(NIVA-rapport;4093, Research report, 1999-09)57 laboratories in 24 countries participated in intercomparison 9913. Two sample sets were used, one for the determination of major ions and one for organic matter and aluminium fractions. Based on the general target ... -
Klassifisering av miljøkvalitet i fjorder og kystfarvann. Organisk materiale i bunnsediment og oksygen i dypvann. Grunnlagsrapport
(NIVA-rapport;2959, Research report, 1993)Det er utarbeidet klasser og grenseverdier for tilstand og forurensningsgrad basert på parametrene organisk karbon og nitrogen i sediment, og middelverdier og minimumsverdier for oksygen i dypvann i fjorder. Klassifiseringen ...