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用汞电极的溶出伏安法测定铊有很高的灵敏度。Начаев曾将铊电积在石墨电极上然后溶出,但认为效果不如汞电极。铊在玻碳电极上直接电积后的溶出法尚未见报导。鉴干玻碳电极在结构上与一般石墨电极不同,表面致密光亮,溶液不会渗入电极内部,因而不易沾污。玻碳电极只要处理得好,可以获得较好的重现性。同时不使用汞,可减少实验室汞的污染。在0.10M磷酸氢二钠溶液中,pH在7～9之间,电积电位-1.40V (vs NAg/AgCl)。
Determination of thallium using the mercury electrode stripping voltammetry has a high sensitivity. Начаев used to accumulate thallium on graphite electrodes and then eluted them, but did not consider them to be as effective as mercury electrodes. Thallium electrodeposited directly on the glassy carbon electrode dissolution method has not been reported. Kam dry glassy carbon electrode in the general structure of the electrode with different, dense and bright surface, the solution will not penetrate the electrode, which is not easy to stain. Glassy carbon electrode as long as well handled, you can get better reproducibility. At the same time do not use mercury, laboratory mercury pollution can be reduced. In 0.10 M disodium hydrogen phosphate solution, the pH was between 7 and 9, and the potential-potential was -1.40 V (vs NAg / AgCl).