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实验发现用 EDTA 络合滴定镍与钴时,其滴定度是不相同的,用微机对实验数据进行回归处理证明镍、钴共存时的滴定度是其相对浓度的函数。回归直线方程可用于近似计算,相对误差在±0.5%以内。
It was found that titration of nickel and cobalt by EDTA complexation was not the same, and the experimental data were processed by computer to prove the titer of nickel and cobalt as a function of their relative concentration. Regression line equation can be used for approximate calculation, the relative error within ± 0.5%.