硫酸镍中硝酸根,是直接影响电镀工艺的重要因素之一。因此,建立一个测定硫酸镍中硝酸根的方法是必要的。硝酸根的测定,目前使用的方法有酚二磺酸法、麝香草酚法、亚铁法、离子选择电极法等。这些方法,各有优缺点,就灵敏度、安全性和操作繁简来说,以麝香草酚比色法为佳。本文在前人工作基础上,采用麝香草酚作为硝酸根的显色剂,就操作条件进行了试验,拟定了切实可行的测定硝酸根的方法。 Nitrate in nickel sulfate is one of the important factors that directly affect the electroplating process. Therefore, it is necessary to establish a method for the determination of nitrate in nickel sulfate. Determination of nitrate, the current methods used phenol disulfonic acid method, thymol method, ferrous method, ion-selective electrode method. These methods, each with its advantages and disadvantages, are better thymol colorimetric methods in terms of sensitivity, safety and ease of operation. Based on the previous work, thymol was used as the reagent of nitrate. The operating conditions were tested and a feasible method for determination of nitrate was developed.