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在Fe(Ⅲ)离子存在下用碘离子选择电极测汞 被引量:3

Determination of Mercury in the Presence of Iron(Ⅲ)by Means of an Iodide Ion-selective Electrode and Potentiometric Titration
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摘要 本文是在Fe(Ⅲ)离子存在下,以氟化钠为掩蔽剂,用碘离子选择电极为指示电极,在pH3~4时以碘化钾为滴定剂,电位滴定法测汞,取得了满意的结果。 The present paper describes the application of the potentiometric titration to the determination of mercury in the presence of iron(Ⅲ)by means of an iodide ionselective electrode and by use of potassium iodide as titrant.Iron(Ⅲ)can be masked with an appropriate amount of sodium fluoride,the suitable pH is found to be 3~4.The method is sufficiently selective and accurate.
出处 《辽宁师范大学学报(自然科学版)》 CAS 1989年第1期33-36,共4页 Journal of Liaoning Normal University:Natural Science Edition
关键词 Fe^3^+ 离子选择电极 iodide ion-selective electrode potentiometric titration sodium fluoride mercury
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