Abstract
ABSTRACT Six kinds of water-soluble porphyrin were examined as a sensitizer (fluorophore) in the bis(2,4,6-trichlorophenyl)oxalate(TCPO)-hydrogen peroxide (H2O2) chemiluminescence(CL) system. Among them, coproporphyrin III showed the highest CL intensity. Moreover, the TCPO-H2O2-coproporphyrin III CL system was separately examined in each micelle solution using a non-ionic surfactant such as Briji 35 and Triton X-100, and an ionic surfactant such as cetyltrimethylammonium chloride(CTAC) and sodium dodecylsulfate. As a result, the CL intensity along with the coexistence of the CTAC micelle increased approximately 36 times compared to that in the absence of surfactant. Based on these findings, the quenching CL determination of copper(II) was established using the complex formation of coproporphyrin III and copper(II) ion. The calibration graph for the concentration of copper(II) was linear in the range of 2×10−8M to 1×10−6M, and the detection limit(3σ) was 1.26×10−8M. Moreover, the relative standard deviation was 2.9%(10 determinations). The proposed method was applied to the determination of copper(II) ion in waste water and satisfactory results were obtained.
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