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Statements

Subject Item
n2:RIV%2F00216305%3A26310%2F08%3APU76231%21RIV09-MSM-26310___
rdf:type
skos:Concept n9:Vysledek
dcterms:description
Spektofotometrické microstanovenístanovení fosforečnanů založené na vzniku iontového asociátu s Rhodaminem B ve vodách. The spectrophotometric determination of phosphate based on the ion association komplex with Rhodamin B is H2PO4[Mo3O10] RhB . Linear calibration curves were observed for 1-7 10-6 M H2PO4- (max = 552 nm, e= 1,42 10-5 dm3 mol cm-1) in 1 M sulphuric acid in the presence of 0,01% non-ionic surfactant Brij 35 and 0,03 M sodium molybdate. The detection limits are XD = 12,4 ppb XD = 36,6 ppb (Graham), XDm = 24,4 ppb (Miller) or 25,6 ppb (IUPAC). No interferences at 1x10-4 M H2PO4- were observed for 1000:1 Mg2+, K+, Na+, NH4+, NO3-, SO42-, Cl-, HCO3- and 100:1 Al3+, Fe2+, Ca2+. As (III, V), NO2- and Si (IV) were especially tested as considerable interferents, from which As (III, V) and NO2- interfere above the concentration only which cannot be found in natural waters. The Si (IV) was masked with 0,1 g l-1 tartaric acid. The optimalised method was applied fot the determination of phosphate in drinking and surface water. The spectrophotometric determination of phosphate based on the ion association komplex with Rhodamin B is H2PO4[Mo3O10] RhB . Linear calibration curves were observed for 1-7 10-6 M H2PO4- (max = 552 nm, e= 1,42 10-5 dm3 mol cm-1) in 1 M sulphuric acid in the presence of 0,01% non-ionic surfactant Brij 35 and 0,03 M sodium molybdate. The detection limits are XD = 12,4 ppb XD = 36,6 ppb (Graham), XDm = 24,4 ppb (Miller) or 25,6 ppb (IUPAC). No interferences at 1x10-4 M H2PO4- were observed for 1000:1 Mg2+, K+, Na+, NH4+, NO3-, SO42-, Cl-, HCO3- and 100:1 Al3+, Fe2+, Ca2+. As (III, V), NO2- and Si (IV) were especially tested as considerable interferents, from which As (III, V) and NO2- interfere above the concentration only which cannot be found in natural waters. The Si (IV) was masked with 0,1 g l-1 tartaric acid. The optimalised method was applied fot the determination of phosphate in drinking and surface water.
dcterms:title
Spectrophotometric Microdetermination of Phosphate Based on the Ion Association Complex with Rhodamine B in Water Spektofotometrické microstanovenístanovení fosforečnanů založené na vzniku iontového asociátu s Rhodaminem B ve vodách. Spectrophotometric Microdetermination of Phosphate Based on the Ion Association Complex with Rhodamine B in Water
skos:prefLabel
Spektofotometrické microstanovenístanovení fosforečnanů založené na vzniku iontového asociátu s Rhodaminem B ve vodách. Spectrophotometric Microdetermination of Phosphate Based on the Ion Association Complex with Rhodamine B in Water Spectrophotometric Microdetermination of Phosphate Based on the Ion Association Complex with Rhodamine B in Water
skos:notation
RIV/00216305:26310/08:PU76231!RIV09-MSM-26310___
n3:aktivita
n16:P
n3:aktivity
P(OC 183)
n3:cisloPeriodika
15
n3:dodaniDat
n13:2009
n3:domaciTvurceVysledku
n11:6529631 n11:2935600
n3:druhVysledku
n17:J
n3:duvernostUdaju
n12:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
396458
n3:idVysledku
RIV/00216305:26310/08:PU76231
n3:jazykVysledku
n4:eng
n3:klicovaSlova
phosphate, Rhodamin B, water
n3:klicoveSlovo
n6:phosphate n6:water n6:Rhodamin%20B
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[22A2414FA139]
n3:nazevZdroje
Chemické listy
n3:obor
n18:CB
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n14:OC%20183
n3:rokUplatneniVysledku
n13:2008
n3:svazekPeriodika
102
n3:tvurceVysledku
Sommer, Lumír Moos, Martin
s:issn
1213-7103
s:numberOfPages
2
n15:organizacniJednotka
26310