【摘要】 本文叙述了用脱膜氧电极—恒电位时安法测定海水溶解氧的步骤及影响因素等。此法有快速(一个水样/分)、准确(±1％)的特点,可用于海洋调查船实验室。更多还原

【Abstract】 A new method of determination of dissolved oxygen in seawater using oxygen electrode without a membrane has been made. Differing from Clark cell, a new model for dissolve cxygen probe has been designed with the following features:( 1 ) Without a gaseous diffusion semi-permeable membrane.( 2 ) Provided with two gold cathode electrodes (a disc and a ring) anda ring anion exchange membrane. ( 3 ) Autometic inlet of sample water into the probe not interfered by air.By means or this modificatitn, the stability of the probe is increased and hysteresis decreased. The determination procedures and calibration are described, The method is fast (a sample/2min) and accurate (±1-1.5%) and can be satisfactorily used in the lab on ship.更多还原