Mass spectral determination of aldehydes, ketones, and carboxylic acids using 1,1-dimethylhydrazine

1985 ◽  
Vol 11 (3) ◽  
pp. 303-310 ◽  
Author(s):  
C. A. McDaniel ◽  
Ralph W. Howard
Keyword(s):  
Carboxylic Acids ◽  
Spectral Determination ◽  
Mass Spectral

Mass spectral determination of long-chain quaternary amines in mixtures

1982 ◽  
Vol 136 ◽  
pp. 135-142 ◽  
Author(s):  
Robert J. Cotter ◽  
Gordon Hansen ◽  
Thomas R. Jones
Keyword(s):  
Spectral Determination ◽  
Mass Spectral ◽  
Long Chain

scholarly journals Mass spectral determination of phosphopantetheinylation specificity for carrier proteins in Mycobacterium tuberculosis

FEBS Open Bio ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 1220-1226 ◽  
Author(s):  
James Jung ◽  
Ghader Bashiri ◽  
Jodie M. Johnston ◽  
Edward N. Baker
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Spectral Determination ◽  
Carrier Proteins ◽  
Mass Spectral

Development and Single-Laboratory Validation of an Improved Method for the Determination of Cyclamate in Foods Using Liquid Chromatography/Tandem Mass Spectrometry

2014 ◽  
Vol 97 (6) ◽  
pp. 1651-1655 ◽  
Author(s):  
Romina Shah ◽  
Lowri S De Jager ◽  
Timothy H Begley
Keyword(s):  
Internal Standard ◽  
Pomegranate Juice ◽  
Spectral Determination ◽  
Precision Data ◽  
Mass Spectral ◽  
Minimal Sample ◽  
Accuracy And Precision ◽  
Liquid Chromatography Tandem Mass ◽  
Potential Matrix

Abstract A fast and reliable LC-MS/MS method for the determination of cyclamate in a variety of food matrices was developed and validated. This method provides both quantitation and qualitative mass spectral determination important for analysis of regulatory samples. Utilization of a cyclamate-d11 internal standard corrects for potential matrix interferences during sample injection and allows minimal sample preparation. Seventeen commercially available food products were fortified at 250 μg/mL and tested as part of the method validation. Recoveries ranged from 72 to 110%, with RSDs ranging from 3 to 15%. The linear range spanned 0.010–1.00 μg/mL. LODs were 0.1 and 0.6 ng/mL, determined in pomegranate juice and dried fig, respectively. LOQs were 0.3 and 1.6 ng/mL, which are significantly lower than needed to measure cyclamate when used as a food additive. The interday and intraday accuracy and precision data are presented. This method was validated for analysis of a variety of commonly adulterated products, including drinks, dried fruits, jams, and hard candies.

Gas chromatographic and mass spectral determination of aloenin in skin-care cosmetics

1990 ◽  
Vol 509 (2) ◽  
pp. 377-382 ◽  
Author(s):  
Hiroshi Nakamura ◽  
Toru Okuyama
Keyword(s):  
Skin Care ◽  
Spectral Determination ◽  
Mass Spectral

scholarly journals Mass spectral determination of phenylacetonitrile (PAN) levels in body tissues of adult desert locust, Schistocerca gregaria

2012 ◽  
Vol 58 (8) ◽  
pp. 1037-1041 ◽  
Author(s):  
Peris W. Amwayi ◽  
Daniel K. Masiga ◽  
Prem Govender ◽  
Peter E.A. Teal ◽  
Baldwyn Torto
Keyword(s):  
Schistocerca Gregaria ◽  
Spectral Determination ◽  
Desert Locust ◽  
Mass Spectral ◽  
Body Tissues
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