Notice of RetractionMorin-Ce4+ Chemiluminescence for the Determination of Environmental Endocrine Disruptors-Nonylphenol

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

A novel flow-injection chemiluminescence(CL) system has been established based on the inhibitory effect of nonylphenol(NP) on the morin-Ce₄₊ CL system. The flow path, flow rate, concentration of Ce⁴⁺, pH of Ce₄₊ solution and concentration of morin were discussed. The results show that the best determination conditions are 5.0×10^-3 mol/L of Ce⁴⁺, 1.0×10⁴ mol/L of morin and pH=1.2 of Ce₄₊ solution. Under the optimal conditions, the reduction value of CL intensity is linear with the concentration of NP within 2×10^-8~2×10^-7g/ml and 2×10^-6~4×10^-5 g/ml. The regression equation was Δl₁=12.12+225.95C_NP and Δl₂=65.291+753164.6C_NP with correlation coefficient 0.9995 and 0.998, respectively. And the detection limit was 2×10^-10 g/ml (3σ). The relative standard deviation (RSD) is 1.48% for the determination of 2×10⁷ g/ml NP(n=10). The recoveries of NP are between 90.7%~106.3% for three different environmental water samples. It suggested that this method can be used for the determination of NP in the real environmental samples.