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Determination of Fe 2+ and Co 2+ by a Multiple‐Target Colorimetric Chemosensor with Low Detection Limit in Aqueous Solution
Author(s) -
Kim Hyunjun,
Seo Yujin,
Youn Yeojin,
Lee Hakyung,
Yang Minuk,
Kim Cheal
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201803415
Subject(s) - detection limit , chemistry , aqueous solution , methylene blue , metal ions in aqueous solution , ion , methylene , nuclear chemistry , metal , analytical chemistry (journal) , chromatography , medicinal chemistry , organic chemistry , photocatalysis , catalysis
A highly effective colorimetric chemosensor DPKP, N′‐(di(pyridin‐2‐yl)methylene)‐6‐hydroxypicolinohydrazide, was synthesized. DPKP sensed Fe 2+ and Co 2+ with the changes of color from colorless to blue and yellow, respectively, without severe inhibition from other metal ions. Binding interactions of DPKP with Fe 2+ and Co 2+ were analyzed to be 1:1 and 2:1 with Job plot and ESI‐MS analyses, respectively. In particular, DPKP has low detection limits for Fe 2+ (0.60 μM) and for Co 2+ (0.22 μM). In addition, DPKP could be used for quantification of Fe 2+ and Co 2+ in environmental samples.