scholarly journals Determination of melamine, ammeline, ammelide and cyanuric acid in infant formula purchased in Canada by liquid chromatography-tandem mass spectrometry

2011 ◽  
Vol 28 (6) ◽  
pp. 698-704 ◽  
Author(s):  
E. Braekevelt ◽  
B.P.-Y. Lau ◽  
S. Feng ◽  
C. Ménard ◽  
S.A. Tittlemier
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Infant Formula ◽  
Cyanuric Acid ◽  
Tandem Mass ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass

scholarly journals Determination of Free and Total Choline and Free and Total Carnitine in Infant Formula and Adult/Pediatric Nutritional Formula by Liquid Chromatography/Tandem Mass Spectrometry (HPLC-MS/MS): A Multi-laboratory Testing Study, Final Action 2015.10

2020 ◽  
Vol 103 (6) ◽  
pp. 1560-1567
Author(s):  
Jeffrey Shippar ◽  
David Ellingson ◽  
Jane Sabbatini
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Infant Formula ◽  
Performance Testing ◽  
Tandem Mass ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass ◽  
Total Carnitine

Abstract Background A multi-laboratory study was conducted on AOAC First Action Method 2015.10 “Determination of Free and Total Choline and Free and Total Carnitine in Infant Formula and Adult/Pediatric Nutritional Formula by Liquid Chromatography/Tandem Mass Spectrometry (HPLC-MS/MS).” Objective In this study, nine laboratories participated in the performance testing of the method using ten nutritional products tested as blind duplicates. Method Both free and total carnitine and free and total choline content of the samples were determined using separate extractions for the free and total results. For free choline and carnitine analysis, samples are diluted in water. For total choline and carnitine analysis, samples are extracted using acid-assisted microwave hydrolysis with nitric acid. For both the free and total methods, samples are then diluted with acetonitrile and analyzed using strong cation exchange (SCX) liquid chromatography coupled to a triple quadrupole tandem mass spectrometer (LCMS). Stable isotope labeled internal standards were utilized in all analyses to compensate for extraction inefficiencies and ionization suppression.

Determination of cyanuric acid residues in catfish, trout, tilapia, salmon and shrimp by liquid chromatography–tandem mass spectrometry

2009 ◽  
Vol 637 (1-2) ◽  
pp. 101-111 ◽  
Author(s):  
Christine M. Karbiwnyk ◽  
Wendy C. Andersen ◽  
Sherri B. Turnipseed ◽  
Joseph M. Storey ◽  
Mark R. Madson ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Cyanuric Acid ◽  
Tandem Mass ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass
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