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序言我们实验室测定电导率时使用的基本原理是利用惠斯登交流电桥测量溶液的电阻。技术程序包括测量一定体积海水的电阻R和温度t。用仲斯型电桥(Γeeds和Northrup公司,4666型)测量电阻,用A.C电桥(A.S.L公司,H7型)和铂电阻(Tinsley公司,5187SA型)测量温度,用Jones型电导池(Beckman公司,6J型)确定海水的体积。用KCl标准溶液(Jones和Bradshaw,1933)确定该电导池的尺寸(或由电导池所限定的海水体积)。KCl溶液的电导率已事先准确知道,物理化学家们用它们作为电导率标准溶液。
Preface The basic principle used when measuring conductivity in our laboratory is to measure the solution’s resistance using a Wheatstone AC bridge. The technical program consists of measuring the resistance R and temperature t of a volume of seawater. The resistance was measured with a Bridge of the Aries type (Γeeds and Northrup, Model 4666) and the temperature was measured with an AC bridge (ASL Corporation, Model H7) and platinum resistance (Model T5755SA, Jones Corporation) , 6J type) to determine the volume of seawater. The cell size (or volume of seawater defined by the cell) is determined using KCl standard solutions (Jones and Bradshaw, 1933). The conductivity of KCl solution has been accurately known in advance, and physicists use them as conductivity standards.