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KMID : 0613820070170020266
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Journal of Life Science
2007 Volume.17 No. 2 p.266 ~ p.271
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Spectrophotometric Determination of Bisphenol A by Complexation with Ferricyanide and Ferric chloride solution
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Kum Eun-Joo
Ryu Hee-Young
Kwon Ki-Suk
Sohn Ho-Yong
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Abstract
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Bisphenol A (BPA) has been widely used as a monomer for production of epoxy resins and polycarbonate plastics. The annual production of BPA exceeds 640,000 metric tons in worldwide. BPA, a suspected phenolic endocrine disruptor, is moderately soluble and frequently detected in industrial wastewater. To date, HPLC and GC has been used for BPA analysis. However, HPLC and GC-analysis need high operation cost, experts, and an elaborate pre-treatment of samples, and is difficult to apply on-time and mass analysis. Therefore, simple, mass and rapid detection of BPA in environments is necessary. In the present study, spectrophotometric method of BPA quantification was developed. Based on blue-color product formation with BPA and ferric chloride/ferricyanide under the optimized conditions, the standard curve was acquired (λ???=0.061 BPA [μM]+0.07155, R2=0.992). Using an established method, the BPA contents in the soil extract, and different water samples and living products, including disposable syringe, cup and plastic tube, were analyzed. The results suggested that the method is useful for BPA determination from different massive samples. Since the BPA metabolites, nontoxic 4-hydroxyacetophenone or 4-hydroxybenzaldehyde, did not form blue-color product, this method is also useful to screen a microorganism for BPA bioremediation.
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KEYWORD
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bisphenol A, ferricyanide, ferric chloride, spectrophotometric determination
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