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Remote electrochemical sensor for monitoring trace mercury

机译:远程电化学传感器,用于监测痕量汞

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A newly designed remote probe has been developed for stripping measurements of trace mercury at large sample-instrument distances. Various gold electrodes, stripping modes, and operation conditions have been optimized to meet the requirement of remote monitoring of mercury. The favorable stripping potentiometric response obtained following 0.5-1.0 min deposition, leads to a rapid detection of low ppb mercury concentrations, and offers a fast warning capability. The optimized protocol offers a low detection limit (of 0.3 mu g/L with 5 min deposition) and good precision (RSD of 3.9 % for n = 100). Due to its inherent sensitivity, simplicity, stability, and smaller dimensions the new probe is well suited for in situ monitoring of trace mercury in natural waters. [References: 10]
机译:已开发出一种新设计的远程探针,用于在较大的样品仪器距离处进行痕量汞的汽提测量。优化了各种金电极,剥离模式和操作条件,以满足对汞进行远程监控的要求。沉积0.5-1.0分钟后可获得良好的溶出电位响应,可快速检测到低ppb汞浓度,并具有快速预警功能。优化后的方案具有较低的检测限(在5分钟的沉积中为0.3μg / L)和良好的精密度(n = 100时,RSD为3.9%)。由于其固有的灵敏度,简单性,稳定性和较小的尺寸,这种新型探头非常适合原位监测天然水中的痕量汞。 [参考:10]

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