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本文报告库仑滴定剂三价铊的应用——钒的库仑滴定和钒、钛连续库仑滴定。实验证明,大量铁、钛、铬均不干扰钒的测定。选择性相当好。同时,钒和钛用三价铊作库仑滴定时,有两个明显分开的突跃范围。因此,亦可用于钒和钛的连续库仑滴定。本法用于微量钒的测定,在几十微克时,相对误差在±0.3％左右。测定结果与标准样品数据相符。
This paper reports the application of coulometric titrant trivalent thallium - coulometric titration of vanadium and continuous coulometric titration of vanadium and titanium. Experiments show that a large number of iron, titanium, chromium do not interfere with the determination of vanadium. Selectivity is quite good. At the same time, vanadium and titanium with trivalent thallium for Coulometric titration, there are two distinct separation range. Therefore, it can also be used for continuous coulometric titration of vanadium and titanium. This method is used for the determination of trace vanadium at a few tens of micrograms, the relative error of ± 0.3%. The measurement results are in accordance with the standard sample data.