一种改进的膜盐度计

叙述了一种可用于现场及实验室使用的新的浸入式电池膜盐度计的设计与结构。该膜盐度计传感器由下列电化学电池组成,用此传感器与微机或pH/离子计配合组成了膜盐度计。该仪器可用于近岸河口地区表层海水盐度监测并用于有潮河口底栖动物生态现场研究。仪器现场条件使用准确度约为盐度测量值1％。同时能用于Cl~-及其他离子的现场监测。

AN IMPROVED MEMBRANE SALINOMETER

The design and construction of a new immerse-cell membrane salinometer suitable for field and laboratory use are described. The membrane salinometer has been consisted with this sensor cell and microcomputer or a pH/ion meter. It can be applied to the monitoring of surface salinity in the nearshore and estuarine areas and to ecological studies on the bottom fauna of a tidal estuary in situ. Its main advantages are convenience, simplicity, low cost,and immunity to interference by suspended material. Accuracy of measurement is about 1 % of the salinity value under field conditions. Its accuracy of measurement can be raised, provided that a thermostat can be used to prevent a temperature difference across the membranes. The instrument can be also used as a continuous monitor of content of Cl- ion without modification. At the same time, the instrument can be modified to apply to continuous monitoring for S-2 ions etc. in situ.