公开(公告)号：US20080047846A1

公开(公告)日：2008-02-28

申请号：US11467855

申请日：2006-08-28

Applicant: Corey A. Salzer

Inventor： Corey A. Salzer

IPC: G01N27/26

CPC classification number: G01N27/4168

Abstract: A sensor for measurement of free chlorine and of total chlorine in aqueous solution including a working electrode having a self-assembled monolayer (SAM) formed on the surface thereof, producing a barrier which reduces the generation of background currents when electrical potentials are applied to the electrode, and blocks the reduction or oxidation of interfering species in the solution, is described. Such SAMs have also been found to block the efficient reduction of chlorine as well. However, N,N-diethyl-p-phenylenediamine (DPD) has been found to effectively transport electrons across the SAM; that is, an oxidized form of DPD produced by a reaction with chlorine is capable of penetrating the SAM such that the reduction of the oxidized DPD species can occur. The generated reduction current is correlated with the concentration of chlorine in solution. Total chlorine may be determined by the addition of an iodide salt.

Abstract translation: 用于在水溶液中测量游离氯和总氯的传感器，包括在其表面上形成有自组装单层（SAM）的工作电极，产生屏障，当电位施加到 电极，并阻止溶液中干扰物质的还原或氧化。 也已经发现这样的SAM也阻止氯的有效还原。 然而，已经发现N，N-二乙基对苯二胺（DPD）有效地将电子传输穿过SAM; 也就是说，通过与氯反应生成的DPD的氧化形式能够穿透SAM，从而可以发生氧化的DPD物质的还原。 产生的还原电流与溶液中氯的浓度相关。 总氯可以通过加入碘化物盐来测定。

公开(公告)号：US07438796B2

公开(公告)日：2008-10-21

申请号：US11467855

申请日：2006-08-28

Applicant: Corey A. Salzer

Inventor： Corey A. Salzer

IPC: G01N27/413

CPC classification number: G01N27/4168

Abstract: A sensor for measurement of free chlorine and of total chlorine in aqueous solution including a working electrode having a self-assembled monolayer (SAM) formed on the surface thereof, producing a barrier which reduces the generation of background currents when electrical potentials are applied to the electrode, and blocks the reduction or oxidation of interfering species in the solution, is described. Such SAMs have also been found to block the efficient reduction of chlorine as well. However, N,N-diethyl-p-phenylenediamine (DPD) has been found to effectively transport electrons across the SAM; that is, an oxidized form of DPD produced by a reaction with chlorine is capable of penetrating the SAM such that the reduction of the oxidized DPD species can occur. The generated reduction current is correlated with the concentration of chlorine in solution. Total chlorine may be determined by the addition of an iodide salt.

Abstract translation: 一种用于测量水溶液中游离氯和总氯的传感器，包括在其表面上形成有自组装单层（SAM）的工作电极，产生屏障，当电势施加到屏幕上时，可减少背景电流的产生 电极，并阻止溶液中干扰物质的还原或氧化。 也已经发现这样的SAM也阻止氯的有效还原。 然而，已经发现N，N-二乙基对苯二胺（DPD）有效地将电子传输穿过SAM; 也就是说，通过与氯反应生成的DPD的氧化形式能够穿透SAM，从而可以发生氧化的DPD物质的还原。 产生的还原电流与溶液中氯的浓度相关。 总氯可以通过加入碘化物盐来测定。