Hand-Held Conductivity Meter and Probe for Small Volumes and Field Work
Hand-Held Conductivity Meter and Probe for Small Volumes and Field Work
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适用于小体积和现场工作的手持式电导率计和探头
DOI：
10.1021/ed077p1606
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发表时间：
2000
影响因子：
3
通讯作者：
B. Ganong
中科院分区：
文献类型：
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作者：
B. Ganong
介绍了一种便携式电导率仪和探头。它们具有独特的功能组合，允许在实验室或现场小批量使用。该探头由两个石墨电极组成，嵌入一个直径小到足以在标准13 x 100 mm试管中使用的刚性塑料管中。中高频交流电源可防止高导电性样品中的电极极化。输出是一个10元素的LED条形图。因此，该设备提供了10个步骤的分辨率，足以半定量测定环境水样中的电导率。
A portable conductivity meter and probe are described. They have a unique combination of features that permits use with small volumes in the laboratory or in the field. The probe consists of two graphite electrodes embedded in a rigid plastic tube with a diameter small enough to use in standard 13 x 100-mm test tubes. A moderately high-frequency ac source prevents electrode polarization in highly conductive samples. The output is a 10-element LED bar graph. The device thus provides 10 steps of resolution, sufficient for semiquantitative determination of conductivity in environmental water samples.