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CN88211182U - 微渗漏参比电极 - Google Patents

微渗漏参比电极 Download PDF

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Publication number
CN88211182U
CN88211182U CN 88211182 CN88211182U CN88211182U CN 88211182 U CN88211182 U CN 88211182U CN 88211182 CN88211182 CN 88211182 CN 88211182 U CN88211182 U CN 88211182U CN 88211182 U CN88211182 U CN 88211182U
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electrode
film
micro
chamber
contrast
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CN 88211182
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张道明
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Institute of Soil Science of CAS
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Institute of Soil Science of CAS
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Priority to CN 88211182 priority Critical patent/CN88211182U/zh
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Abstract

本实用新型公开了一种微渗漏参比电极,电极膜采用石墨膜制成,内电极为银一氯化银,因此可以取代实验室常用的甘汞电极。电极膜以胶结的方式与电极腔体固定成一体,制造简单,使用方便。

Description

本实用新型属于电化学研究领域,涉及一种参比电极,特别是微渗漏参比电极。
目前,实验室使用最普遍的参比电极是甘汞电极,它的最大缺点是制造工艺复杂,电极外壳和内芯均是玻璃制品,电极内芯所装的汞和氯化亚汞(甘汞)均为引起污染的有毒物质。饱和甘汞电极渗漏速度较快,造成内溶液流失,并容易污染样品,或者受外界环境的污染,同时还需经常从侧管口不断更新内溶液,因此电极使用时应十分注意,而且它与带电物质悬液接触时,会产生较大的液接电位。
八十年代初,曾有人研制出一种低渗漏型的石墨接界电极,但这种电极膜的处理较复杂,由于其内溶液是铜一硫酸铜,因此在室内并不适用。
本实用新型的目的是提供一种微渗漏参比电极,采用银一氯化银作为内电极,可以替代目前的甘汞电极,供室内和现场测试使用,携带方便,电极响应快。
本实用新型是以如下方式完成的:与普通电极类似,在电极腔体内装入电极内芯及电极内溶液,其关键在于用胶结的方式将电极膜与电极腔体胶结成一体,并且电极膜采用石墨膜制成。石墨膜可以用下述方法制成,将石墨粉经化学处理,使之在1000℃高温条件下膨胀,最后压制成石墨膜。为了降低电极的内阻,加快电极响应时间,最好将石墨膜稍加处理后再制成电极膜,由于处理石墨膜的技术并不复杂,因此电极的加工和制造容易。
下面结合实施例所示的附图对本实用新型进一步详述。
图1为微渗漏参比电极结构示意图。
参照图1,电极腔体〔1〕上设有电极帽〔5〕,电极内芯〔3〕与导线〔6〕导通,电极腔体〔1〕内充填了一定量的电极内溶液〔2〕,为有效地阻止电极内溶液〔2〕的泄漏,可在电极腔体〔1〕设有电极帽〔5〕的那端,加上一个密封塞〔7〕,电极膜〔4〕以胶结的方式固定在电极腔体〔1〕的另一端,电极膜〔4〕采用处理过的石墨膜,根据不同的要求裁制成所需的形状即可。石墨膜的厚度最好为0.05cm~0.1cm,电极膜〔4〕可以采用环氧加硅橡胶作为胶结剂与电极腔体〔1〕胶结成一体,采用环氧加硅橡胶作为胶结剂的好处在于胶结牢固又不透水,同时还具有一定的韧性。
本实用新型制造容易,使用寿命长,电极电位稳定,重现性好,平衡时间短,电极内阻较小,因此电流引起测量误差(IR)降较小,悬液效应小,电极内溶液的渗漏速度极慢,减少了样品的污染,且不易极化,由于采用银一氯化银作为内电极,可取代甘汞电极,给室内外工作带来方便。

Claims (3)

1、微渗漏参比电极,由电极腔体、电极帽、电极内芯、导线、银一氯化银内电极组成,其特征是电极膜采用石墨膜制成,电极膜以胶结的方式与电极腔体固定成一体。
2、根据权利要求1规定的微渗漏参比电极,其特征是制成电极膜的石墨膜的厚度为0.05cm~0.1cm。
3、根据权利要求1或2规定的微渗漏参比电极,其特征是电极膜通过环氧加硅橡胶作为胶结剂与电极腔体固定成一体。
CN 88211182 1988-03-26 1988-03-26 微渗漏参比电极 Withdrawn CN88211182U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 88211182 CN88211182U (zh) 1988-03-26 1988-03-26 微渗漏参比电极

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Application Number Priority Date Filing Date Title
CN 88211182 CN88211182U (zh) 1988-03-26 1988-03-26 微渗漏参比电极

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CN88211182U true CN88211182U (zh) 1988-11-30

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CN 88211182 Withdrawn CN88211182U (zh) 1988-03-26 1988-03-26 微渗漏参比电极

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105806773A (zh) * 2014-12-31 2016-07-27 国核(北京)科学技术研究院有限公司 高温氟盐参比电极及其制造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105806773A (zh) * 2014-12-31 2016-07-27 国核(北京)科学技术研究院有限公司 高温氟盐参比电极及其制造方法
CN105806773B (zh) * 2014-12-31 2018-07-10 国核(北京)科学技术研究院有限公司 高温氟盐参比电极及其制造方法

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