在生产中,测定钴广泛采用亚硝基-R-盐比色法,这是因为试剂易得,方法较为灵敏,特别是选择性较高。我国有色金属镍的生产中钴的监测也应用这个方法,但是当测定金属镍或各种镍试剂中的微量杂质钴时,这个方法还有许多不足之处。首先是灵敏度还不够高,在测定的条件下,摩尔吸光系数为11290。这样,如测定特定金属镍或特纯镍中的杂质钻,需称取大量的有时高 In production, the determination of cobalt widely used nitroso-R-salt colorimetric method, which is because the reagent is easy to get, the method is more sensitive, especially high selectivity. This method is also applied to the monitoring of cobalt in the production of non-ferrous nickel in our country. However, this method has many shortcomings when it is used to measure the trace impurities of cobalt in nickel metal or various nickel reagents. The first is the sensitivity is not high enough, in the determination of the conditions, the molar absorption coefficient of 11290. In this way, such as the determination of specific metal nickel or pure nickel impurities in the drill, weighed a lot of sometimes high