海水低浓度负二价硫传感器现场测量关键技术研究

Research on Key Technique of Lower Concentration S^(2-) Sensor In Situ Measurement

通过对传感器敏感探头参比电极盐桥的改进,并在信号转换电路中引入锁相放大技术,使传感器整体性能提高,解决了海水负二价硫(S2-)低浓度(10-4～10-7mol/L)情况下的现场测量关键技术。

Through improving the salt bridge of the reference electrode and adding the phase-locked amplifying technology into signal converting circuit of the sensor, the measurement capability of the sensor is improved. Key technique of lower concentration S^2- in situ measurement is solved.