Removal of oxygen in flowing solutions using a photochemical process

Removal of oxygen in flowing solutions using a photochemical process
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使用光化学过程去除流动溶液中的氧气

DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
G. Wallace
G. Wallace
中科院分区：
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文献类型：
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作者：
J. Barisci;G. Wallace

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本文提出了一种在线去除溶解氧的方法，并应用于流动溶液中金属的阳极溶出伏安法测定。氧气的去除是由支持电解质和氧气之间的光化学反应引起的，该光化学反应由引导到检测器流动池中的紫外光引起。有机酸如柠檬酸、甲酸和草酸已被用作支持电解质。柠檬酸被认为是最有效的氧清除剂。用这种酸除去氧也比用氮气的常规除去更有效。采用铜、镉和铅的测定来证明该方法。
A method for the on-line removal of dissolved oxygen has been developed and applied to the determination of metals by anodic stripping voltammetry in flowing solutions. The removal of oxygen results from a photochemical reaction between the supporting electrolyte and oxygen, induced by ultraviolet light directed into the detector flow cell. Organic acids such as citric, formic, and oxalic acids have been used as supporting electrolytes. Citric acid was found to be the most efficient oxygen scavenger. The removal of oxygen with this acid was also more efficient than conventional removal with nitrogen gas. The determination of Cu, Cd, and Pb was used to demonstrate the method.