Rapid-sweep electrochemical detector for chemical analysis of fl

Details Rapid-sweep electrochemical detector for chemical analysis of fl Rapid-sweep electrochemical detector for chemical analysis of fl

1984-03-05

1986-12-09

Krass, Errol A.

Boots, shoes, and leggings

73 611C, 364200, 364550, 340347CC, G01N 2746, G06F 1520, G06F 1546

Patent

active

046284630

ABSTRACT:
A system for identification and quantification of electrochemically active compounds in a flow stream involves stepping the electrode potential in a detector rapidly through the range of interest with a square wave superimposed on a staircase signal and recording the current response as functions of step number and sweep number, i.e., as functions of voltage and time. From the recorded data, a three-dimensional graph (potential, time and current) is structured and from which identification and quantification of the electrochemically active compounds is effected with minimum expenditure of time. The system includes a potentiostat controlled by a computer with, however, independent logic control contained in the potentiostat. Provision is also made to compensate automatically for variations in resistance between the cell electrodes.

REFERENCES:
patent: 4272760 (1981-06-01), Prazak et al.
patent: 4364027 (1982-12-01), Murooka
patent: 4376875 (1983-03-01), Beirne
patent: 4472771 (1984-09-01), Bienvenu et al.
patent: 4476026 (1984-10-01), Katz et al.
patent: 4476713 (1984-10-01), Alfredson
patent: 4496454 (1985-01-01), Berger
patent: 4511659 (1985-04-01), Matson
patent: 4524420 (1985-06-01), Glodo et al.
patent: 4532043 (1985-07-01), Prud'homme et al.

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