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A Novel Analytical Method for Trace Ammonium in Freshwater and Seawater Using 4-Methoxyphthalaldehyde as Fluorescent Reagent
Joint Authors
Hu, Hongzhi
Liang, Ying
Guo, Qing
Wu, Chancui
Pan, Yingming
Zhang, Qian
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-09-01
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
A novel fluorescent reagent for determination of ammonium, 4-methoxyphthalaldehyde (MOPA), was successfully synthesized in this study.
Under alkaline conditions, MOPA could reacted with ammonium rapidly at room temperature, producing fluorescent substance which had maximum excitation at 370 nm and emission wavelength at 454 nm.
Based on this, a novel fluorescence analysis method was established for the determination of trace ammonium in natural water.
Experimental parameters including reagent concentration, pH, reaction equilibrium time, and metal ions masking agent were optimized.
The results showed that the optimized MOPA concentration was 0.12 g/L, pH was in the range of 11.2–12.0, and sulfite concentration was 0.051 g/L, respectively.
Metal ions masking agent had no obvious effect on the fluorescence signal.
With the reaction time of 15 minutes, linear range of this method was between 0.025 and 0.300 μmol/L, and the method detecting limit was 0.0058 μmol/L.
The matrix recovery of the proposed method was in the range of 93.6–108.1%.
Compared with the OPA method, this method was much more sensitive and rapid without the interference of background peak and would be more suitable for developing a portable fluorescence detection system.
American Psychological Association (APA)
Liang, Ying& Pan, Yingming& Guo, Qing& Hu, Hongzhi& Wu, Chancui& Zhang, Qian. 2015. A Novel Analytical Method for Trace Ammonium in Freshwater and Seawater Using 4-Methoxyphthalaldehyde as Fluorescent Reagent. Journal of Analytical Methods in Chemistry،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1067192
Modern Language Association (MLA)
Liang, Ying…[et al.]. A Novel Analytical Method for Trace Ammonium in Freshwater and Seawater Using 4-Methoxyphthalaldehyde as Fluorescent Reagent. Journal of Analytical Methods in Chemistry No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1067192
American Medical Association (AMA)
Liang, Ying& Pan, Yingming& Guo, Qing& Hu, Hongzhi& Wu, Chancui& Zhang, Qian. A Novel Analytical Method for Trace Ammonium in Freshwater and Seawater Using 4-Methoxyphthalaldehyde as Fluorescent Reagent. Journal of Analytical Methods in Chemistry. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1067192
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1067192