RU97102709A - METHOD FOR PRODUCING A MODIFIED ELECTRODE FOR THE INVERSION-VOLTAMPEROMETRIC METHOD FOR DETERMINING TRACES OF HEAVY AND TOXIC METALS - Google Patents

METHOD FOR PRODUCING A MODIFIED ELECTRODE FOR THE INVERSION-VOLTAMPEROMETRIC METHOD FOR DETERMINING TRACES OF HEAVY AND TOXIC METALS

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Publication number
RU97102709A
RU97102709A RU97102709/25A RU97102709A RU97102709A RU 97102709 A RU97102709 A RU 97102709A RU 97102709/25 A RU97102709/25 A RU 97102709/25A RU 97102709 A RU97102709 A RU 97102709A RU 97102709 A RU97102709 A RU 97102709A
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RU
Russia
Prior art keywords
electrode
concentration
inversion
applying
heavy
Prior art date
Application number
RU97102709/25A
Other languages
Russian (ru)
Other versions
RU2124720C1 (en
Inventor
Х.З. Брайнина
А.В. Иванова
С.Ю. Сараева
Н.Ю. Стожко
Н.А. Малахова
Original Assignee
Уральский государственный экономический университет
Общество с ограниченной ответственностью научно-производственное внедренческое предприятие "ИВА"
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Application filed by Уральский государственный экономический университет, Общество с ограниченной ответственностью научно-производственное внедренческое предприятие "ИВА" filed Critical Уральский государственный экономический университет
Priority to RU97102709A priority Critical patent/RU2124720C1/en
Priority claimed from RU97102709A external-priority patent/RU2124720C1/en
Application granted granted Critical
Publication of RU2124720C1 publication Critical patent/RU2124720C1/en
Publication of RU97102709A publication Critical patent/RU97102709A/en

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Claims (2)

1. Способ изготовления модифицированного электрода для инверсионно-вольтамперометрического метода определения следов тяжелых и токсичных металлов, включающий нанесение графитсодержащего материала на подложку с последующим нанесением модификатора на рабочую поверхность разового электрода с дальнейшим определением металлов методом анодной инверсионной вольтамперометрии с использованием стандартных добавок, отличающийся тем, что в качестве подложки берут разовый толстопленочный графитовый электрод с плоской поверхностью или гибкий электрод в виде графитовой нити, модифицированные методом адсорбции органического вещества, избирательного на конкретный металл, с последующим образованием нерастворимого соединения этого металла, полученного при нанесении на поверхность электрода органического вещества (например диэтилдититкарбоминатом натрия, пирролидиндитиокарбаматом аммония, антипирином, нитрозонафтолом, родамином Б, ксиленоловым оранжевым, дитизоном и т. д.) в виде водного раствора 0,04 oC 0,2% и соли металла в виде водного раствора концентрации 0,2 oC 10 г/л последовательно, причем поверхность модифицированного электрода перед анализом дополнительно подвергают электрохимической подготовке заключающейся в чередовании наложения импульсов потенциалов в интервале (-1,4) oC (+1,3)В и постоянного потенциала (-1,4) oC (0,8)В.1. A method of manufacturing a modified electrode for the inversion voltammetric method for determining traces of heavy and toxic metals, comprising applying a graphite-containing material to a substrate, followed by applying a modifier to the working surface of a single electrode with further metal determination by anode inversion voltammetry using standard additives, characterized in that as a substrate, take a single thick-film graphite electrode with a flat surface or flexible an electrode in the form of a graphite filament modified by adsorption of an organic substance that is selective on a particular metal, followed by the formation of an insoluble compound of this metal obtained by applying organic matter to the electrode surface (for example, sodium diethyl dithitic carbominate, ammonium pyrrolidindithiocarbamate, antipyrine, nitrozone naphtholamine, rhodamine B, orange, dithizone, etc.) in the form of an aqueous solution of 0.04 o C 0.2% and a metal salt in the form of an aqueous solution of a concentration of 0.2 o C 10 g / l moreover, the surface of the modified electrode is additionally subjected to electrochemical preparation before analysis, which consists in alternating the imposition of potential pulses in the range (-1.4) o C (+1.3) V and constant potential (-1.4) o C (0.8 )IN. 2. Способ по п.1, отличающийся тем, что электрохимическую подготовку поверхности электрода, заключающуюся в чередовании наложения импульсов потенциалов и постоянного потенциала проводят в электрохимической ячейке, заполненной раствором соляной кислоты HCl с концентрацией 0,2 oC 0,5М или смесью кислот серной H2SO4 с концентрацией 0,1М и соляной HCl c концентрацией 0,004М.2. The method according to claim 1, characterized in that the electrochemical preparation of the electrode surface, which consists in alternating the impulses of potentials and constant potential, is carried out in an electrochemical cell filled with a solution of hydrochloric acid HCl with a concentration of 0.2 ° C 0.5 M or a mixture of sulfuric acids H 2 SO 4 with a concentration of 0.1 M and hydrochloric HCl with a concentration of 0.004 M.
RU97102709A 1997-02-18 1997-02-18 Process of manufacture of modified electrode for inverse volt-ampere method determining traces of heavy and toxic metals RU2124720C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU97102709A RU2124720C1 (en) 1997-02-18 1997-02-18 Process of manufacture of modified electrode for inverse volt-ampere method determining traces of heavy and toxic metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU97102709A RU2124720C1 (en) 1997-02-18 1997-02-18 Process of manufacture of modified electrode for inverse volt-ampere method determining traces of heavy and toxic metals

Publications (2)

Publication Number Publication Date
RU2124720C1 RU2124720C1 (en) 1999-01-10
RU97102709A true RU97102709A (en) 1999-04-10

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Application Number Title Priority Date Filing Date
RU97102709A RU2124720C1 (en) 1997-02-18 1997-02-18 Process of manufacture of modified electrode for inverse volt-ampere method determining traces of heavy and toxic metals

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2216727C1 (en) * 2002-06-18 2003-11-20 Уральский государственный экономический университет Process of manufacture of electrode for electrochemical analysis ( variants )
RU2249217C2 (en) * 2002-06-18 2005-03-27 Уральский Государственный Экономический Университет (УрГЭУ) Electrochemical method for determining specific antibodies in blood serum by means of proteins labeled with metals
RU2507512C2 (en) * 2012-04-06 2014-02-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Method of making modified electrode for electrochemical analysis (versions)

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