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首页> 外文期刊>Continental Shelf Research: A Companion Journal to Deep-Sea Research and Progress in Oceanography >The optimization of Ag/Ag2S electrode using carrier electroplating of nano silver particles and its preliminary application to offshore Kueishan Tao, Taiwan
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The optimization of Ag/Ag2S electrode using carrier electroplating of nano silver particles and its preliminary application to offshore Kueishan Tao, Taiwan

机译：纳米银粒子的载体电镀优化Ag / Ag2S电极及其在台湾海山龟山的初步应用

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Eutrophication-induced ocean acidification is causing a dramatic ecologic change in the coastal ocean. A more acidic ocean would lead to more volatile H2S in the coastal ocean, especially in the area where shallow hydrothermal vents exist. Therefore, the early detection of H2S and its associates is needed. In this study, the preparation method for and the detection limit of an Ag/Ag2S electrode were optimized by coating the electrode with micro-scale to nano-scale silver particles. The size of the silver particles was dependent on the electroplating power used to produce them: (1) direct current power made micrometer scale silver particles, and (2) direct current carrier power made nano-scale silver particles. As a result, the detection limits of [S2-] of the Ag/Ag2S electrode made using direct current and direct carrier current were improved to 1 x 10(-5) mol L-1 and 1 x 10(-7) mol L-1, respectively. Such improvements were mostly due to the fact that nano silver particles have larger surface area and higher surface energy. The Ag/Ag2S electrode made by direct carrier current method was then mounted to a multi-parameter sensor (including a pH and an Eh electrode) used to search of new hydrothermal vents near the Kueishan Tao in May, 2011. A new hydrothermal vent was discovered based on pH, Eh and H2S anomalies at three depths. A clear [S2-] signal anomaly was observed from the top sensor indicating the dispersive pattern of the hot fluid near this shallow vent site. This could also provide additional information on the dispersion pattern of anthropogenic pollutants in the coastal ocean. (C) 2015 Elsevier Ltd. All rights reserved.
机译：富营养化引起的海洋酸化正在引起沿海海洋的巨大生态变化。酸性更大的海洋会导致沿海海洋中更易挥发的H2S，特别是在存在浅层热液喷口的地区。因此，需要及早发现H2S及其相关物质。在这项研究中，通过在电极上涂覆微米至纳米级的银颗粒，优化了Ag / Ag2S电极的制备方法和检测限。银颗粒的大小取决于用于生产它们的电镀功率：（1）直流电制备的微米级银颗粒，和（2）直流载电制备的纳米级银颗粒。结果，将使用直流电和直流载流子制造的Ag / Ag2S电极的[S2-]的检出限提高到1×10（-5）mol L-1和1×10（-7）mol L-1。 -1。这种改进主要是由于纳米银颗粒具有更大的表面积和更高的表面能这一事实。然后将通过直流电载流法制得的Ag / Ag2S电极安装到多参数传感器（包括pH和Eh电极）上，该传感器用于在2011年5月搜寻奎山Tao附近的新热液喷口。是根据三个深度的pH，Eh和H2S异常发现的。从顶部传感器观察到清晰的[S2-]信号异常，表明该浅孔附近的热流体的分散模式。这也可以提供有关沿海海洋中人为污染物扩散模式的更多信息。 （C）2015 Elsevier Ltd.保留所有权利。

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