US 4,302,314 AGranted

Voltammetric cell, measuring electrode and method

AssigneeKernforschungsanlage Julich Gesellschaft mit beschrankter Haftung

InventorsJerzy Golimowski, Laszlo Sipos, Paul Valenta

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Abstract

A voltammetric cell, particularly for the determination of trace elements in a liquid, such as water, comprises a cover in which the measuring electrode and a reference electrode are mounted and which sealingly engages the cell vessel so that the contents of the latter will be sealed from contamination by the environment during the measuring process. The exchangeable meauring electrode has an analysis cup or crucible within the vessel into which the electrode can be inserted, the bottom of the vessel having a configuration complementary to the external configuration of the replaceable crucible or cup. The cup may have a downwardly tapering frustoconical configuration and the base of the vessel can have a corresponding downwardly tapering recess accommodating at least the bottom of the cup.

Claims4

Dependent claims

A voltammetric cell for analytical determination of trace materials in a liquid, comprising:

an upwardly open vessel having a bottom;
a cover sealingly engageable with the top of the vessel;
a sample-receiving cup received in said vessel, said vessel having a bottom shaped to receive said cup;
a measuring electrode having electrode material adapted to be in contact with said sample of said liquid to be held in said cup;
a sealed rotary lead-in member for said measuring electrode, said member being disposed in said cover;
an electrically conductive connecting member received in said lead-in member and forming an electrical connection with the electrode material in contact with a sample of said liquid in said cup, said measuring electrode being replaceably connected to said lead-in member;
means for rotating said connecting member to rotate said measuring electrode in the sample of liquid in said cup;
and
at least one further electrode mounted in said cover and extending into the liquid sample in said cup.

6 more elements

Dependencies are inferred from the claim text.