论文部分内容阅读
用高氯酸根选择性电极测定高氯酸根的报导并不多,仅见到Baczuk和Selig均用高氯酸根电极为指示电极,以氯化四苯鉮为滴定剂测定高氯酸根。采用直接电位法则尚未见报道。存在硝酸根时用高氯酸根电极测定高氯酸根,Crion公司认为液膜型高氯酸根电极(Orion93-81)在测定10~(-3)MClO_4~-时,NO_3~-的最大允许含量(误差为10%)为5×10~(-2)M;Baczuk的电位滴定法,当样品中NO_3~-的量与ClO_4~-的量为1:1时,误差为+4.7%。因此,存在大量硝酸根时,少量高氯酸根的电极法测定是值得研究的课题。
Perchlorate selective electrode determination of perchlorate is not reported, only Baczuk and Selig are seen with the perchlorate electrode as the indicator electrode, tetracycline chloride as the titrant determination of perchlorate. The use of direct potential law has not been reported. Perchlorate was measured with perchlorate electrode in the presence of nitrate and Crion Company considered that the maximum permissible content of NO_3 ~ - in the determination of 10 ~ (-3) MClO_4 ~ - by liquid membrane perchlorate electrode (Orion93-81) The error is 10%) is 5 × 10 -2 M; Baczuk potentiometric titration, when the amount of NO_3 ~ - and ClO_4 ~ in the sample is 1: 1, the error is + 4.7%. Therefore, the presence of large amounts of nitrate, the small amount of perchlorate electrode method is worthy of study.