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Inhibition of seawater on bisphenol A (BPA) degradation by Fenton reagents.
Environ Int. 2004 Apr; 30(2):145-50.EI

Abstract

To investigate bisphenol-A (BPA) degradation in seawater using Fenton reagents, changes in the BPA recovery and in the concentration of BPA metabolite, BPA-o-quinone in the three water samples; BPA free deionizad water (control water), 3% aq. NaCl and seawater as a function of time after BPA fortification in the presence of radical oxygen species (ROS) at 20 degrees C were investigated. The BPA recoveries were lower in both 3% aq. NaCl and seawater than in the control water. The BPA recovery in aq. NaOCl decreased as a function of NaOCl concentration, indicating that BPA could be degraded by the potent radical ion (OCl-) at the concentration of above 2 microM. A BPA metabolite, BPA-o-quinone was formed in all the water samples after addition of ROS which was produced by Fenton reaction (reaction of 0.11 M H2O2 and 0.44 mM FeCl3.6H2O). These results indicated that BPA degradation could occur by an addition of ROS and further accelerated by the formation of OCl- in salt containing water samples. BPA recovery was the highest in seawater immediately after addition of Fenton reagents and the amount of BPA-o-quinone was very low, which suggests that seawater possesses an inhibitory system on BPA degradation. There was a positive correlation (p<0.01) between the fortified iron concentration and turbidity in seawater. Turbidity might be originated from iron-binding substances. Degradation threshold of BPA was observed when Fenton reaction was employed in seawater fortified with high amount of BPA. The present study suggested that iron trapping caused an inhibition on BPA degradation by Fenton reagents.

Authors+Show Affiliations

Chiba Prefectural Institute of Public Health, 666-2 Nitona-cho, Chuo-ku, Chiba 260-8715, Chiba City, Japan. j.sjk@ma.pref.chiba.jpNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

14749102

Citation

Sajiki, Junko, and Jun Yonekubo. "Inhibition of Seawater On Bisphenol a (BPA) Degradation By Fenton Reagents." Environment International, vol. 30, no. 2, 2004, pp. 145-50.
Sajiki J, Yonekubo J. Inhibition of seawater on bisphenol A (BPA) degradation by Fenton reagents. Environ Int. 2004;30(2):145-50.
Sajiki, J., & Yonekubo, J. (2004). Inhibition of seawater on bisphenol A (BPA) degradation by Fenton reagents. Environment International, 30(2), 145-50.
Sajiki J, Yonekubo J. Inhibition of Seawater On Bisphenol a (BPA) Degradation By Fenton Reagents. Environ Int. 2004;30(2):145-50. PubMed PMID: 14749102.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Inhibition of seawater on bisphenol A (BPA) degradation by Fenton reagents. AU - Sajiki,Junko, AU - Yonekubo,Jun, PY - 2004/1/30/pubmed PY - 2004/6/21/medline PY - 2004/1/30/entrez SP - 145 EP - 50 JF - Environment international JO - Environ Int VL - 30 IS - 2 N2 - To investigate bisphenol-A (BPA) degradation in seawater using Fenton reagents, changes in the BPA recovery and in the concentration of BPA metabolite, BPA-o-quinone in the three water samples; BPA free deionizad water (control water), 3% aq. NaCl and seawater as a function of time after BPA fortification in the presence of radical oxygen species (ROS) at 20 degrees C were investigated. The BPA recoveries were lower in both 3% aq. NaCl and seawater than in the control water. The BPA recovery in aq. NaOCl decreased as a function of NaOCl concentration, indicating that BPA could be degraded by the potent radical ion (OCl-) at the concentration of above 2 microM. A BPA metabolite, BPA-o-quinone was formed in all the water samples after addition of ROS which was produced by Fenton reaction (reaction of 0.11 M H2O2 and 0.44 mM FeCl3.6H2O). These results indicated that BPA degradation could occur by an addition of ROS and further accelerated by the formation of OCl- in salt containing water samples. BPA recovery was the highest in seawater immediately after addition of Fenton reagents and the amount of BPA-o-quinone was very low, which suggests that seawater possesses an inhibitory system on BPA degradation. There was a positive correlation (p<0.01) between the fortified iron concentration and turbidity in seawater. Turbidity might be originated from iron-binding substances. Degradation threshold of BPA was observed when Fenton reaction was employed in seawater fortified with high amount of BPA. The present study suggested that iron trapping caused an inhibition on BPA degradation by Fenton reagents. SN - 0160-4120 UR - https://www.unboundmedicine.com/medline/citation/14749102/Inhibition_of_seawater_on_bisphenol_A__BPA__degradation_by_Fenton_reagents_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0160-4120(03)00155-7 DB - PRIME DP - Unbound Medicine ER -