Photochemical reduction of hexavalent chromium in glycerol-containing solutions

被引：30

作者：

Yurkow, EJ ^{[1
]}

Hong, J ^{[1
]}

Min, S ^{[1
]}

Wang, S ^{[1
]}

机构：

[1] Rutgers State Univ, Environm & Occupat Hlth Sci Inst, Dept Pharmacol & Toxicol, Piscataway, NJ USA

来源：

ENVIRONMENTAL POLLUTION | 2002年 / 117卷 / 01期

关键词：

hexavalent chromium; remediation; ultraviolet tight; photochemical reduction;

D O I：

10.1016/S0269-7491(01)00297-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Hexavalent chromium [Cr(VI)] in the form of potassium dichromate was photochemically reduced to trivalent chromium [Cr(III)] in aqueous solutions containing glycerol. This reaction occurred rapidly during irradiation with either unfiltered sunlight or a UVA-emitting light source. Photochemical reduction of Cr(VI) was pH-dependent and did not occur in dilute solutions of sodium hydroxide. In acidified solutions, the reduction occurred at elevated rates and at lower concentrations of glycerol, This reaction was found to be dependent on the unsubstituted alcohol groups of glycerol since alpha-phosphoglycerol and beta-phosphoglycerol did not support the photochemical reduction of Cr(VI). These findings suggest that glycerol or related polyols can be used for the remediation of hexavalent (toxic) chromium at contaminated environmental sites. (C) 2002 Published by Elsevier Science Ltd.

引用

页码：1 / 3

页数：3

共 11 条

[1] Toxicity and carcinogenicity of Cr(VI) in animal models and humans [J].