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Photoreduction of Hg(II) in the presence of SO_4~(2-) under artificial solar radiation

机译:HG(II)在人工辐射下的SO_4〜(2-)存在下的镜头

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Photoreduction of Hg(II) is of great importance but remains not fully understood especially in the presence of (SO_4)~(2-). In this study, laboratory experiments were conducted to investigate the reduction of Hg(Cl)_2 with various (SO_4)~(2-) concentrations under artificial solar radiation. The whole process was tracked by changing Hg(0) concentrations in argon; the rate constants were calculated by trial method and were compared with other experiment. The results show the reaction rate decreased with increasing (SO_4)~(2-) concentrations (0-20 mg L~(-1)) and the cause of inhibitory effect is assumed with two explanations. The concentration of Hg(0) in argon increased firstly and decreased later in each treatment, since the main reactions in rising and dropping period are different. The comparison indicates that reduction rate is influenced by combined factors such as the form of mercury, the quantity of DOM and TSSs, depth of water and quality of light source.
机译:HG(II)的光射到非常重要,但在存在(SO_4)〜(2-)的情况下,仍未完全理解。在该研究中,进行实验室实验以研究人造太阳辐射下的各种(SO_4)〜(2-)浓度的HG(CL)_2的还原。通过在氩气中改变hg(0)浓度来跟踪整个过程;通过试验方法计算速率常数,并与其他实验进行比较。结果表明,随着(SO_4)〜(2-)〜(2-)浓度(0-20mg L〜(-1)),抑制效果的原因有两种解释,反应速率降低。氩气中Hg(0)的浓度首先增加并在每种治疗后期减少,因为上升期和滴剂的主要反应是不同的。比较表明,减少率受汞形式,DOM和TSS的数量,水的浓度和光源的质量的影响。

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