An optical material for the detection of trace S2O3 2− in milk based on a copper complex
- 240 Downloads
A novel S2O3 2− luminescent sensor (Cu2+-p-CPIP) was developed and the presence of S2O3 2− caused an obvious fluorescence enhancement at 420 nm upon excitation at 330 nm, which could be distinguished with the naked eye under a UV lamp. Remarkably, the compound exhibited excellent selective and sensitive response to S2O3 2− over other common anions with a micromolar limit of detection (0.442 μM) in DMSO/H2O (v/v, 1:1) buffer. The absorbance intensity and the color of Cu2+-p -CPIP solution changed gradually with the increase of S2O3 2− concentration. The proposed method was applied to the determination of S2O3 2− in milk samples and the recoveries were 97.5–105%. The preparation of Cu2+-p -CPIP exhibited the quick, simple and facile advantages. The results showed that Cu2+-p -CPIP can be a good candidate for simple, rapid and sensitive colorimetric detection of S2O3 2− in aqueous solution.
KeywordsChemodosimeter S2O32− 1,10-Phenanthroline-5,6-dione Copper complex
This work was financially supported by the National Natural Science Foundation for Young Scientists of China (21301150, 21571154), the Post-Doctoral Foundation of Jiangsu Provincial (1501032B), the Six Taleng Peak Project in Jiangsu Province (SWYY-063) and sponsored by Qing Lan Project of Jiangsu Provices.
- Han H, Lu LP, Wang QM, Zhu ML, Yuan CX, Xing S, Fu XQ (2012) Synthesis and evaluation of oxovanadium(IV) complexes of Schiff-base condensates from 5-substituted-2-hydroxybenzaldehyde and 2-substituted-benzenamine as selective inhibitors of protein tyrosine phosphatase 1B. Dalton Trans 41(36):11116–11124CrossRefPubMedGoogle Scholar
- Kage S, Kudo K, Ikeda N (1998) Determination of sulfide, thiosulfate and polysulfides in biological materials for diagnosis of sulfide poisoning. Jpn J Forensic Toxicol 16(3):179–189Google Scholar
- Maseda C, Hayakawa A, Okuda K, Asari M, Tanaka H, Yamada H, Jin S, Horioka K, Matoba K, Shiono H, Matsubara K (2017) Liquid chromatography-tandem mass spectrometry method for the determination of thiosulfate in human blood and urine as an indicator of hydrogen sulfide poisoning. Leg Med 24:67–74CrossRefGoogle Scholar