| Bisphenol A(BPA) is a typical environmental estrogen, is used to synthesis of polycarbonates, epoxy resins and thermal paper, thus it commonly appear in various products for everyday use. Extensive use of bisphenol A makes it appear in the tap water, sewage and air, and low concentration of bisphenol A can cause interference to human or animal’s endocrine function. So it is necessary to establish a rapid, simple, low cost detection method and degradation method of bisphenol A.BPA sensitized chemiluminescence detection method was established, and successfully applied to the determination of BPA in actual sample of the environment. bulk polymerization technology was used to prepare BPA molecularly imprinted polymers(MIPs) for solid phase extraction, prepared BPA molecularly imprinted polymers was used in enrichment and purification of BPA in complex water, and establish a molecularly imprinted-chemiluminescence detection method of BPA in actual water. This method and a liquid phase method were adopted to determine the residual amount and degradation rate of BPA degradated by the iron complex catalyzed Fenton-like system, and effects of several main water background composition on BPA degradation were investigated by simulating the actual water.Copper chelate diperiodatocuprate(III)(DPC) was synthesized in this paper, and DPC-luminol-H2O2 detection system was established based on the catalytical effect of DPC on luminol-H2O2 system. It is found that when the concentration of BPA ranges from 5×10-8 mol/L to 1×10-6 mol/L, lgCBPA has a good linear relationship with the value of the system chemiluminescence intensity, and detection limit of the method is 1.41×10-9 mol/L. The method was used for the analysis of actual environment samples, such as bottled water, PC bottle and PC bowl. BPA was not detected in bottled water, while excessive amounts of BPA was detected in PC bottle as well as PC bowl.For the static adsorption experiment of prepared molecularly imprinted polymers(MIPs), it was found that the adsorption rate of MIPs is fast in the water, and the adsorption saturation can be reached in 2 min, and the adsorption capacity of MIPs in the water is also the bigger than in the methanol, acetonitrile, ethanol or chloroform. For the selective adsorption experiment of MIPs in single system and mixed system of BPA, phenol and humic acid, it can be concluded that the competitive adsorption capacity of BPA was the strongest, then was the phenol and humic acid. Therefore the interference of phenol and humic acid in the actual water on chemiluminescence method can be eliminated, when MIPs as solid-phase extraction material. After condition of solid-phase extraction was optimized, the molecularly imprinted-chemiluminescence analysis method is successfully applied in the determination of BPA in actual water.For the oxidative degradation reactions of BPA catalyzed by the pyridine type amide-iron, it was concluded that the increased dosage of hydrogen peroxide and iron complex can both increase degradation rate of BPA and reduce its residual amount. It was found that pH had a a great impact on degradation rate of BPA, and degradation rate of BPA was higher when the system was under the condition of alkaline(pH = 9.9 and pH = 10.76), values of the degradation rate were 94.1% and 93.1%, respectively. The inhibitory effect of isopropanol on oxidation of BPA catalyzed by iron complex was not obvious, and that of humic acid was obvious. When the concentration of humic acid increased from 0 mg/L to 20 mg/L, degradation rate of BPA reduced from 65% to 45.8%; Silicate also had obviously inhibitory effect on oxidation of BPA catalyzed by iron complex, when concentration of silicate increased from 0 mg/L to 5 mg/L, degradation rate of BPA reduced from 65% to 48.6%. |
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