Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, Universidad Nacional de La Plata, CC 16, Suc. 4, 1900 La Plata, Argentina.
Chemosphere. 2012 Nov;89(10):1189-94. doi: 10.1016/j.chemosphere.2012.07.019. Epub 2012 Aug 9.
The laser flash photolysis technique (λ(exc)=355 nm) was used to investigate the mechanism of the HgCl(2) reduction mediated by CO(2)(-) radicals generated from quenching of the triplet states of 1,4-naphthoquinone (NQ) by formic acid. Kinetic simulations of the experimental signals support the proposed reaction mechanism. This system is of potential interest in the development of UV-A photoinduced photolytic procedures for the treatment of Hg(II) contaminated waters. The successful replacement of NQ with a commercial fulvic acid, as a model compound of dissolved organic matter, showed that the method is applicable to organic matter-containing waters without the addition of quinones.
采用激光闪光光解技术（λ（激发）=355nm），通过研究由 1,4-萘醌（NQ）三重态被甲酸猝灭产生的 CO2(-)自由基还原 HgCl2 的反应机制。实验信号的动力学模拟支持所提出的反应机制。该系统对于开发用于处理 Hg(II)污染水的紫外 A 光致光解程序具有潜在的应用价值。成功地用一种商业腐殖酸（作为溶解有机物的模型化合物）代替 NQ，表明该方法可应用于含有机物的水，而无需添加醌类物质。
