Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1216, Issue 31, Pages 5924-5926Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2009.06.038
Keywords
Non-suppressed conductivity detection; Ion chromatography; DMA; TMA; TMAO; Aquatic products
Funding
- National High-tech Research and Development project of China [2007AA091802]
- National Key Technology R&D Program of China [2008BAD941301]
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An ion chromatography method with non-suppressed conductivity detection was developed for the simultaneous determination of dimethylamine (DMA), trimethylamine (TMA) and trimethylamine-n-oxide (TMAO) in aquatic products. they were separated by means of cation-exchange chromatography using a 3.0 mmol/L methanesulfonic acid solution as eluent and an Ion Pac CS17 column (250 mm x 4 mm i.d.) as the separation column. Detection limits of dimethylamine, trimethylamine and trimethylamine-n-oxide were 0.06, 0.08 and 0.10 mg/L, respectively. The relative standard deviations (RSDs) of peak area were less than 3.53%. The recoveries were between 93.7% and 104.1%. Unlike traditional methods, this validated method is inexpensive and stable. (C) 2009 Elsevier B.V. All rights reserved.
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