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US 5,292,423 AGranted
Method and apparatus for trace metal testing
AssigneeNew Mexico State University Technology Transfer Corporation
InventorJoseph Wang
Life of this patent
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Abstract
Disclosed are a method and apparatus for trace metal testing using mercury-coated screen printed electrodes. Both voltammetric and potentiometric stripping analysis are used. Sample solutions were tested employing both stirring and non-stirring, as well as aeration and deaeration procedures. Microliter samples suitable for slide mounting were also employed.
Claims46
A method of analyzing trace metals comprising the steps of:
- a) providing a plurality of electrodes screen-printed on a substrate;
- b) electrolytically depositing a metal film upon at least one of the plurality of screen-printed electrodes;
- and
- c) analyzing a sample for heavy metal content by using electrochemical stripping analysis with the plurality of electrodes.
1 more element
Apparatus for heavy metal trace testing comprising:
- means for providing a plurality of electrodes screen-printed on a substrate;
- means for electrolytically depositing a metal film upon at least one of said plurality of screen-printed electrodes;
- and
- means for analyzing a sample for heavy metal content by electrochemical stripping analysis with said plurality of electrodes.
1 more element
A method of analyzing trace metals comprising the steps of:
- a) providing a plurality of electrodes upon a plastic substrate;
- b) electrolytically depositing a metal film upon at least one of the plurality of electrodes;
- and
- c) analyzing a sample for heavy metal content by using electrochemical stripping analysis with the plurality of electrodes.
1 more element
Apparatus for heavy metal trace testing comprising:
- a) means for providing a plurality of electrodes upon a plastic substrate;
- b) means for electrolytically depositing a metal film upon at least one of said plurality of electrodes;
- and
- c) means for analyzing a sample for heavy metal content by electrochemical stripping analysis with the plurality of electrodes.
1 more element
Dependencies are inferred from the claim text.