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A portable cyanide analyzer using gold wire electrodes

机译:使用金线电极的便携式氰化物分析仪

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We report on a continuous flow potentiometric analyzer for cyanide incorporating multiple gold-wire electrodes. The portable apparatus comprised a low-powered peristaltic pump, a Perspex multicell incorporating six indicator and six reference electrodes connected to an eight channel A/D converter. Real-time data may be displayed on a notebook computer. The system performance was optimized for sample peak heights, reproducibility, working ranges and calibration slopes. Well- defined peaks and fast response times (with peak widths < 20 s) were observed using a carrier of 0.1M sodium hydroxide at a flow rate of 5 mt min(-1). The repeatability of the electrode response was 2.3 % (n = 5). The log-linear range was 0.25 to 70 ppm (9.6 to 2700 mu M) with slopes 96, 205 and 450 mV decade(-1) for one, three and six electrodes in series, respectively. [References: 16]
机译:我们报告了结合多个金线电极的氰化物连续流动电位分析仪。该便携式设备包括一个低功率蠕动泵,一个Perspex多单元电池,该单元包含六个指示器和六个参考电极,这些电极连接到一个八通道A / D转换器。实时数据可以显示在笔记本计算机上。针对样品峰高,重现性,工作范围和校准斜率优化了系统性能。在流速为5 mt min(-1)的条件下,使用0.1M氢氧化钠载体观察到定义明确的峰和快速响应时间(峰宽<20 s)。电极响应的可重复性为2.3%(n = 5)。一个,三个和六个串联电极的对数线性范围为0.25至70 ppm(9.6至2700μM),斜率分别为96、205和450 mV十进位度(-1)。 [参考:16]

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