Determination of bisphenol A in effluent water of analogue MBR wastewater treatment system using high-performance liquid chromatography

摘要

In this paper, the concentration of bisphenol A (BPA) in the analogue MBR wastewater treatment system effluent was determined using high-performance liquid chromatography (HPLC). Then the toxicity of BPA to photobacterium phosphoreum (P. phosphoreum)was measured. Liquid-liquid extraction method was used for the pretreatment of water samples. In order to establish the liquid-liquid extra-ction-HPLC method used for the determination of BPA, the influences caused by the species and the usage amount ofthe extraction solvents in process of the liquid-liquid extraction were discussed and the HPLC conditions were optimized. A good linear correlation coefficient of the method linearity (R= 0.9997) was observed, and the detection limit was 10.5 mu g/L at asignal-to-noise ratio of 3. The recoveries of BPA were between 94.16%-98.92% and the RSD of the determination were less than 6.9%. The monitoring result about the effluent concentration of BPA was 1.240mg/L after operating the analogue MBR wastewater treatment system for one month. The result of toxicity study showed that 2 mu g/L BPA had low toxicity to P. phosphoreum, according to water quality-determination of the acute toxicity of substance to the P. phosphoreum. This study established an easy andaccurate method for the determination of BPA in the water samples.