Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 210, Issue -, Pages 315-320Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2018.11.051
Keywords
Copper nanoclusters; Chemiluminescence; Diperiodatoargentate(III); Folic acid; Nitrite
Categories
Funding
- Natural Science Foundation of Shanxi Province [2013011013-3]
- Fundamental Research Fund of Modern College of Humanities and Sciences of Shanxi Normal University [2018JCYJ12]
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The reaction between diperiodatoargentate(III) (DPA) and folic acid (FA) produced weak chemiluminescence (CL) in acid medium, which was greatly enhanced in the presence of copper nanoclusters (CuNCs). The CL intensity of CuNCs-DPA-FA system increased with the concentration of FA ranging from 0.1 to 10.0 mu M. The proposed CL system was applied for the detection of FA in pharmaceutical formulation and human urine samples. Further, the CL signal of CuNCs-DPA-FA system was inhibited by nitrite, and the inhibited CL intensity was proportional to the nitrite concentration in the range of 1.0-80.0 mu M. The method was successfully applied to determine nitrite in water, pickled vegetable and sausage samples. A possible CL mechanism was briefly discussed. (C) 2018 Elsevier B.V. All rights reserved.
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