The present invention relates to the detection of salt content in environment, and is especially one kind of salinity detecting sensor suitable for horizontal and vertical sections of coastal deposit and its detection method. The sensor comprises a cation electrode, an anion electrode and a thin-layer sample introduction device, wherein the thin-layer sample introduction device is arranged between the anion electrode and the cation electrode; Among them, the thin-layer sample injection device is a material capable of spontaneously sucking samples. The potential salinity sensor has the advantages of low cost, high sensitivity, short response time, small required sample amount, simple operation and the like. The sensor is expected to be used as a new type salinity meter.
; 李引豪; 秦伟
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