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Statements

Subject Item
n2:RIV%2F61389013%3A_____%2F11%3A00359037%21RIV12-AV0-61389013
rdf:type
skos:Concept n13:Vysledek
dcterms:description
MALDI-TOF MS quantification is hampered by the poor reproducibility and molecular-mass and compositional discrimination. The use of an internal standard increases reproducibility and allows a calibration curve to be constructed. With synthetic polymers, the method requires a polymer of the same molecular mass distribution and composition as the analyte. When the content of the precursor polymer in a modified polymer is sought, the pure precursor is usually available and the modified polymer can serve as an internal standard. The method has to be combined with that of standard addition and the precursor polymer added directly to the sample. The experiments with simulated modified polymers revealed the signal-intensity ratio not proportional to the concentrations ratio. Thus, the basic assumption of the standard-addition method is not met. Therefore, the multi-point combined internal-standard standard-addition method based on the power-type calibration curve was developed and verified. MALDI-TOF MS quantification is hampered by the poor reproducibility and molecular-mass and compositional discrimination. The use of an internal standard increases reproducibility and allows a calibration curve to be constructed. With synthetic polymers, the method requires a polymer of the same molecular mass distribution and composition as the analyte. When the content of the precursor polymer in a modified polymer is sought, the pure precursor is usually available and the modified polymer can serve as an internal standard. The method has to be combined with that of standard addition and the precursor polymer added directly to the sample. The experiments with simulated modified polymers revealed the signal-intensity ratio not proportional to the concentrations ratio. Thus, the basic assumption of the standard-addition method is not met. Therefore, the multi-point combined internal-standard standard-addition method based on the power-type calibration curve was developed and verified.
dcterms:title
Quantification in MALDI-TOF mass spectrometry of modified polymers Quantification in MALDI-TOF mass spectrometry of modified polymers
skos:prefLabel
Quantification in MALDI-TOF mass spectrometry of modified polymers Quantification in MALDI-TOF mass spectrometry of modified polymers
skos:notation
RIV/61389013:_____/11:00359037!RIV12-AV0-61389013
n13:predkladatel
n14:ico%3A61389013
n3:aktivita
n12:P n12:Z
n3:aktivity
P(GA203/08/0543), Z(AV0Z40500505)
n3:cisloPeriodika
1/2
n3:dodaniDat
n15:2012
n3:domaciTvurceVysledku
n4:4458664 n4:3961915
n3:druhVysledku
n9:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
225401
n3:idVysledku
RIV/61389013:_____/11:00359037
n3:jazykVysledku
n10:eng
n3:klicovaSlova
MALDI-TOF mass spectrometry; modified polymers; quantification
n3:klicoveSlovo
n5:quantification n5:MALDI-TOF%20mass%20spectrometry n5:modified%20polymers
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[25FB3C8543A0]
n3:nazevZdroje
Analytica Chimica Acta
n3:obor
n18:CC
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n17:GA203%2F08%2F0543
n3:rokUplatneniVysledku
n15:2011
n3:svazekPeriodika
693
n3:tvurceVysledku
Walterová, Zuzana Horský, Jiří
n3:wos
000290886800010
n3:zamer
n6:AV0Z40500505
s:issn
0003-2670
s:numberOfPages
7
n16:doi
10.1016/j.aca.2011.03.019