SU515061A1 - Microelectrode hanging mercury droplets - Google Patents

Microelectrode hanging mercury droplets

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Publication number
SU515061A1
SU515061A1 SU2088246A SU2088246A SU515061A1 SU 515061 A1 SU515061 A1 SU 515061A1 SU 2088246 A SU2088246 A SU 2088246A SU 2088246 A SU2088246 A SU 2088246A SU 515061 A1 SU515061 A1 SU 515061A1
Authority
SU
USSR - Soviet Union
Prior art keywords
microelectrode
rod
mercury
mercury droplets
hanging mercury
Prior art date
Application number
SU2088246A
Other languages
Russian (ru)
Inventor
Степан Иванович Жданов
Инна Наумовна Палант
Юлия Александровна Давыдовская
Original Assignee
Предприятие П/Я А-7815
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-7815 filed Critical Предприятие П/Я А-7815
Priority to SU2088246A priority Critical patent/SU515061A1/en
Application granted granted Critical
Publication of SU515061A1 publication Critical patent/SU515061A1/en

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Description

Изобретение касаетс  электрохимических процессов и аналитической химии. Известны электроды, изготовленные в виде стержн  из токонепровод шего электри чески и химически инертного материала е продольным каналом заполненным ртутью, в которых капл  ртути удерживаетс  платиновым контактом, впа нным в стекло. Недостатком электродов такой конструкции  вл етс  возникновение помех в результате взаимодействи  определнемого металла с платввой, растворенной в ртути. Цель изобретени  - повысить чувствительность анализа, улучшить надежность и эксплуатационные характеристики. Это достигаетс  тем, что в конще стерж н  из токонепровод щего материала соосно с продольным каналом впрессован иридиевы капилл р, диаметр которого меньше днаметра продольного канала, а торвд ирн.0,иевого капилл ра со стороны капли изолирован ма-гериалом стержн . На чертеже показан предлагаемый мнкро электрод. Основной деталью электрода  вл етс  вертикально расположенный цилиндрический стержень 1 из полиэтилена или тефлона требуемой длины: наружный диаметр стержн  6-8 мм. В нем предусмотрено продольное осеаое отвеЕх:тие дл  соединени  с ртутным резервуаром сверху и формировани  ртутной капли снизу, В среднюю ступень стержн  впрессован цилиндрический металлический капилл р 2 длиной пор дка 1О Диаметр внутреннего канала в металлическом капилл ре 1ОО-150 мкм торцова  поверхность его изолирована от анализируемого раствора тонкой (толщиной 0,5 мм) прослойкой 3 из материала стержн  1 с диаметром отверсти  таким же, как в капилл ре 2. Металлический капилл р 2 выполнен из ириди , так как этот металл значительно меньше растворим в ртути, чем платина. Стержень 1 верхней частью сочленен с резервуаром (на чертеже не показан), который заполн етс  ртутью засасыванием через канал капилл ра в нижнем конце стержн  с помощью вакуумнрующего устройства (например, водоструйного насоса, форвакуумThe invention relates to electrochemical processes and analytical chemistry. Electrodes made in the form of a rod from a current-conducting electrically and chemically inert material by a longitudinal channel filled with mercury are known, in which a drop of mercury is held by a platinum contact embedded into glass. A disadvantage of electrodes of this design is the occurrence of interference as a result of the interaction of a detectable metal with a plate dissolved in mercury. The purpose of the invention is to increase the sensitivity of the analysis, to improve the reliability and performance. This is achieved by inserting an iridium capillary coaxially with a non-conductive material coaxially with the longitudinal channel, the diameter of which is smaller than the longitudinal channel diameter, and the core of the droplet is insulated with a giant rod. The drawing shows the proposed microscopic electrode. The main part of the electrode is a vertically arranged cylindrical rod 1 made of polyethylene or Teflon of the required length: the outer diameter of the rod is 6-8 mm. It provides a longitudinal axial ejection: for connecting with the mercury tank from above and forming a mercury drop from below. A cylindrical metal capillary 2 of a length of about 1O is pressed into the middle step of the rod and its inner surface is insulated from the the analyzed solution is thin (0.5 mm thick) layer 3 of the material of the rod 1 with the hole diameter the same as in the capillary 2. The metal capillary p 2 is made of iridium, since this metal has significantly changed More soluble in mercury than platinum. The rod 1 is articulated with the reservoir (not shown in the drawing), which is filled with mercury by suction through the capillary channel at the lower end of the rod using a vacuum device (for example, a water jet pump, forvacuum

SU2088246A 1974-12-30 1974-12-30 Microelectrode hanging mercury droplets SU515061A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2088246A SU515061A1 (en) 1974-12-30 1974-12-30 Microelectrode hanging mercury droplets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2088246A SU515061A1 (en) 1974-12-30 1974-12-30 Microelectrode hanging mercury droplets

Publications (1)

Publication Number Publication Date
SU515061A1 true SU515061A1 (en) 1976-05-25

Family

ID=20604788

Family Applications (1)

Application Number Title Priority Date Filing Date
SU2088246A SU515061A1 (en) 1974-12-30 1974-12-30 Microelectrode hanging mercury droplets

Country Status (1)

Country Link
SU (1) SU515061A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5578178A (en) * 1995-03-06 1996-11-26 Analytical Instrument Systems, Inc. Mercury drop electrode system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5578178A (en) * 1995-03-06 1996-11-26 Analytical Instrument Systems, Inc. Mercury drop electrode system

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