J 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.

Basic information

Original name

Detection of melamine in infant formula and grain powder by surface-assisted laser desorption/ionization mass spectrometry

Authors

HSIEH, Yi-Ting (158 Taiwan), Wen-Tsen CHEN (158 Taiwan), Iva TOMALOVÁ (203 Czech Republic, belonging to the institution), Jan PREISLER (203 Czech Republic, guarantor, belonging to the institution) and Huan-Tsung CHANG (158 Taiwan)

Edition

Rapid Communications in Mass Spectrometry, Wiley InterScience, 2012, 0951-4198

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.509

RIV identification code

RIV/00216224:14740/12:00057422

Organization unit

Central European Institute of Technology

UT WoS

000304154300001

Keywords in English

Melamine; Gold Nanoparticles; SALDI MS

Tags

Tags

Reviewed
Změněno: 15/2/2018 22:17, prof. Mgr. Jan Preisler, Ph.D.

Abstract

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.

Links

ED1.1.00/02.0068, research and development project
Name: CEITEC - central european institute of technology
GCP206/10/J012, research and development project
Name: Analýza biomolekul hmotnostní spektrometrií s laserovou desorpcí/ionizací za účasti nanomateriálů
Investor: Czech Science Foundation