Abstract
A method for sensitive simultaneous analysis of aliphatic primary amines and diamines has been developed and validated. The compounds were analyzed by reversed-phase high-performance liquid chromatography after pre-column derivatization with 2,6-dimethyl-4-quinolinecarboxylic acid N-hydroxysuccinimide ester as fluorescent probe. The derivatization reaction was performed at 50 °C for 40 min in 0.1 mol L−1 borax buffer solution (pH 7.5). The resulting fluorophores were separated to baseline on a C18 column and fluorimetrically detected at λ ex/λ em = 326/409 nm. Detection limits were in the range 0.50–0.02 nmol L−1. The method was successfully used for analysis of aliphatic amines in water, human urine, and serum.
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This work was supported by the National Natural Science Foundation of China (20805040), the Natural Science Foundation of He’nan Province of China (082300420140), the Foundation of He’nan Educational Committee (2008A150020), China Postdoctoral Science Foundation Funded project (20080430163), Jiangsu planned projects for postdoctoral research funds (0801041B), and Excellent Youth Foundation of He’nan Scientific Committee (084100410024).
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Huang, KJ., Wei, CY., Xie, WZ. et al. LC Analysis of Aliphatic Primary Amines and Diamines After Derivatization with 2,6-Dimethyl-4-quinolinecarboxylic Acid N-Hydroxysuccinimide Ester. Chroma 70, 747–752 (2009). https://doi.org/10.1365/s10337-009-1256-z
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DOI: https://doi.org/10.1365/s10337-009-1256-z