UV-light induced photodegradation of 17α-ethynylestradiol in aqueous solutions

被引：40

作者：

Liu, B

Wu, F

Deng, NS ^{[1
]}

机构：

[1] Wuhan Univ, Dept Environm Sci, Wuhan 430072, Peoples R China

[2] Huangshi Polytech Coll, Dept Environm & Chem Engn, Huangshi 435003, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2003年 / 98卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

17 alpha-ethynylestradiol (EE2); photodegradation; UV-light; fluorescence spectra;

D O I：

10.1016/S0304-3894(02)00321-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photodegradation of 17alpha-ethynylestradiol (EE2) in aqueous solutions induced by UV-light was preliminarily studied in this paper by means of fluorescence, UV and infrared spectra. The result suggested that EE2 in aqueous solutions underwent photodegradation under irradiation with UV disinfection lamp (lambda = 254 nm, 30 W), but the photodegradation was not observed under high pressure mercury lamp (lambda greater than or equal to 365 nm, 250 W). The photodegradation of 1.6-20.0 mg/l EE2 in aqueous solutions at a given initial pH value of 6.8 was pseudo-first order reaction. Increasing the initial concentration of EE2 lowered the photodegradation rate. The photodegradation rate of EE2 reached the lowest value at pH about 5.0, higher pH values of 6.0-8.0 benefited the photodegradation. Ferric ions can promote the photodegradation of EE2 in aqueous solutions at pH value of 2.0-5.0. (C) 2003 Elsevier Science B.V All rights reserved.

引用

页码：311 / 316

页数：6

共 10 条

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