Metal Complexation Properties of Schiff Bases Containing 1,3,5-Triazine Derived from 2-Hydroxy-1-Naphthaldehyde in Solution. A Simple Spectrofluorimetric Method to Determine Mercury (II)

Four new Schiff base ligands carrying naphthalene groups were prepared from the reaction of 2,4-diamino-6-methyl-1,3,5-triazine and 2,4-diamino-6-undecyl-1,3,5-triazine with 2-hydroxy-1-naphthaldehyde. The influence of a series of metal ions including Cu 2+ , Co 2+ , Hg 2+ , Al 3+ , Cr 3+ , Fe 3+ ,...

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Bibliographic Details
Published in:Journal of fluorescence 2017, Vol.27 (1), p.59-68
Main Authors: Ocak, Miraç, Ak, Tuğba, Aktaş, Ayşe, Özbek, Nurhayat, Çağılcı, Osman Can, Gümrükçüoğlu, Abidin, Kantekin, Halit, Ocak, Ümmühan, Alp, Hakan
Format: Article
Language:English
Subjects:
Analytical Chemistry
Base metal
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedicine
Biophysics
Biotechnology
Calcium ions
Cobalt
Complexation
Drinking water
Emission analysis
Imines
Ligands
Mercury (metal)
Metal ions
Naphthalene
Original Article
Spectrofluorimetry
Spectrophotometry
Stoichiometry
Water sampling
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Summary:Four new Schiff base ligands carrying naphthalene groups were prepared from the reaction of 2,4-diamino-6-methyl-1,3,5-triazine and 2,4-diamino-6-undecyl-1,3,5-triazine with 2-hydroxy-1-naphthaldehyde. The influence of a series of metal ions including Cu 2+ , Co 2+ , Hg 2+ , Al 3+ , Cr 3+ , Fe 3+ , Pb 2+ , Ni 2+ , Cd 2+ , Zn 2+ , Mn 2+ , Ag + , Ba 2+ , Ca 2+ and Mg 2+ on the spectroscopic properties of the ligands was investigated by means of absorption and emission spectrometry. The results of spectrophotometric and spectrofluorimetric titrations disclosed the complexation stoichiometry and complex stability constant of the ligands with metal ions. A simple spectrofluorimetric method was developed using the Schiff base derived from 2,4-diamino-6-undecyl-1,3,5-triazine to determine Hg 2+ ion. No cleanup or enrichment of the tap water sample was required. A modified standard addition method was used to eliminate matrix effect. The standard addition graph was linear between 0.2 and 2.6 mg/L in determination of Hg 2+ . Detection and quantification limits were 0.08 and 0.23 mg/L, respectively. The simple and cost-effective method can be applied to water samples.
ISSN:1053-0509
1573-4994
DOI:10.1007/s10895-016-1934-9