2012
Detection of melamine in infant formula and grain powder by surface-assisted laser desorption/ionization mass spectrometry
HSIEH, Yi-Ting; Wen-Tsen CHEN; Iva TOMALOVÁ; Jan PREISLER; Huan-Tsung CHANG et. al.Základní údaje
Originální název
Detection of melamine in infant formula and grain powder by surface-assisted laser desorption/ionization mass spectrometry
Autoři
HSIEH, Yi-Ting; Wen-Tsen CHEN; Iva TOMALOVÁ; Jan PREISLER a Huan-Tsung CHANG
Vydání
Rapid Communications in Mass Spectrometry, Wiley InterScience, 2012, 0951-4198
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.509
Kód RIV
RIV/00216224:14740/12:00057422
Organizační jednotka
Středoevropský technologický institut
UT WoS
000304154300001
Klíčová slova anglicky
Melamine; Gold Nanoparticles; SALDI MS
Příznaky
Recenzováno
Změněno: 15. 2. 2018 22:17, prof. Mgr. Jan Preisler, Ph.D.
Anotace
V originále
We have developed a method for the determination of melamine (MEL), ammeline (AMN), and ammelide (AMD) by surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) using gold nanoparticles (Au NPs). The major peaks for MEL, AMN, and AMD at m/z 127.07, 128.05, and 129.04 are assigned to the [MEL + H]+, [AMN + H]+, and [AMD + H]+ ions. Because the three tested compounds adsorb weakly onto the surfaces of the Au NPs through Au–N bonding, they can be easily concentrated from complex samples by applying a simple trapping/centrifugation process. The SALDI-MS method provides limits of detection of 5, 10, and 300 nM for MEL, AMN, and AMD, respectively, at a signal-to-noise ratio of 3. The signal variation for 150-shot average spectra of the three analytes within the same spot was 15%, and the batch-to-batch variation was 20%. We have validated the practicality of this approach by the analysis of these three analytes in infant formula and grain powder. This simple and rapid SALDI-MS approach holds great potential for screening of MEL in foods.
Návaznosti
| ED1.1.00/02.0068, projekt VaV |
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| GCP206/10/J012, projekt VaV |
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