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Statements

Subject Item
n2:RIV%2F61388971%3A_____%2F09%3A00328370%21RIV10-MSM-61388971
rdf:type
n3:Vysledek skos:Concept
dcterms:description
The kinetic method has been applied for determination of d-Phe/l-Phe enantiomeric ratio. Discrimination of enantiomers was inferred from product ion mass spectra of trimeric cluster ions containing the analyte (l,d-Phe), Cu2 as a central metal and l-Trp as a chiral reference ligand. Unsatisfactory quantitative results achieved on an ion trapwere rationalized by high-resolution mass spectrometry. The formation of Mg2-containing cluster isobaric to trimeric cluster [Cu(l-Trp)2Phe] was observed. Interference like this was identified as a possible reason for deterioration of quantitative low-resolution mass spectrometric analyses of real-world samples based on the kinetic method. Cation-exchangerwas used for easy removal of magnesium from a sample and improvement of quantitation. Chiral dependence of formation of the Cu2 containing trimeric clusterwas also observed. Heterochiral diastereoisomeric ions were created less effectively The kinetic method has been applied for determination of d-Phe/l-Phe enantiomeric ratio. Discrimination of enantiomers was inferred from product ion mass spectra of trimeric cluster ions containing the analyte (l,d-Phe), Cu2 as a central metal and l-Trp as a chiral reference ligand. Unsatisfactory quantitative results achieved on an ion trapwere rationalized by high-resolution mass spectrometry. The formation of Mg2-containing cluster isobaric to trimeric cluster [Cu(l-Trp)2Phe] was observed. Interference like this was identified as a possible reason for deterioration of quantitative low-resolution mass spectrometric analyses of real-world samples based on the kinetic method. Cation-exchangerwas used for easy removal of magnesium from a sample and improvement of quantitation. Chiral dependence of formation of the Cu2 containing trimeric clusterwas also observed. Heterochiral diastereoisomeric ions were created less effectively
dcterms:title
Magnesium interference and different efficiencies of diastereoisomeric cluster formation in phenylalanine enantiomeric discrimination by the kinetic method Magnesium interference and different efficiencies of diastereoisomeric cluster formation in phenylalanine enantiomeric discrimination by the kinetic method
skos:prefLabel
Magnesium interference and different efficiencies of diastereoisomeric cluster formation in phenylalanine enantiomeric discrimination by the kinetic method Magnesium interference and different efficiencies of diastereoisomeric cluster formation in phenylalanine enantiomeric discrimination by the kinetic method
skos:notation
RIV/61388971:_____/09:00328370!RIV10-MSM-61388971
n4:aktivita
n9:Z n9:P
n4:aktivity
P(GA203/07/0765), P(LC07017), Z(AV0Z50200510), Z(MSM6198959216)
n4:cisloPeriodika
1-3
n4:dodaniDat
n10:2010
n4:domaciTvurceVysledku
n16:4140702 n16:4316851
n4:druhVysledku
n18:J
n4:duvernostUdaju
n6:S
n4:entitaPredkladatele
n11:predkladatel
n4:idSjednocenehoVysledku
324332
n4:idVysledku
RIV/61388971:_____/09:00328370
n4:jazykVysledku
n12:eng
n4:klicovaSlova
enantiomeric dicrimination; kinetic method; mass spectrometry
n4:klicoveSlovo
n17:kinetic%20method n17:mass%20spectrometry n17:enantiomeric%20dicrimination
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[4BB9B8F0E622]
n4:nazevZdroje
International Journal of Mass Spectrometry
n4:obor
n15:CB
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
4
n4:projekt
n5:GA203%2F07%2F0765 n5:LC07017
n4:rokUplatneniVysledku
n10:2009
n4:svazekPeriodika
280
n4:tvurceVysledku
Lemr, Karel Bednář, P. Havlíček, Vladimír Ranc, V.
n4:wos
000263195500034
n4:zamer
n14:AV0Z50200510 n14:MSM6198959216
s:issn
1387-3806
s:numberOfPages
5