scholarly journals Biosensor for Direct Determination of Fenitrothion and EPN Using Recombinant Pseudomonas putida JS444 with Surface Expressed Organophosphorus Hydrolase. 1. Modified Clark Oxygen Electrode

Sensors ◽  
2006 ◽  
Vol 6 (4) ◽  
pp. 466-472 ◽  
Author(s):  
Yu Lei ◽  
Priti Mulchandani ◽  
Wilfred Chen ◽  
Ashok Mulchandani
Keyword(s):  
Pseudomonas Putida ◽  
Direct Determination ◽  
Oxygen Electrode ◽  
Organophosphorus Hydrolase ◽  
Clark Oxygen Electrode

Oxidation of lignins and their components by oxygen in the presence of laccase from Polyporus versicolor. lignin detection by an enzyme electrode

1984 ◽  
Vol 49 (6) ◽  
pp. 1390-1394 ◽  
Author(s):  
Vladimír Malovík ◽  
A. I. Yaropolov ◽  
S. D. Varfolomeev
Keyword(s):  
Methoxy Group ◽  
Oxygen Electrode ◽  
Covalent Attachment ◽  
Waste Waters ◽  
Immobilized Laccase ◽  
Kinetics Of ◽  
Catalyzed Oxidation ◽  
Alkylamine Glass ◽  
Clark Oxygen Electrode

The kinetics of the laccase-catalyzed oxidation of model lignin components by oxygen has been studied. It has been shown that in natural lignis the fragments containing guaiacyl groups are enzymatically oxidized without cleavage of the ether bond in the methoxy group. The enzyme has been immobilized by entrapping in polyacrylamide gel and also by covalent attachment to the surface of alkylamine glass. Immobilized laccase was used for the construction of sensors with the Clark oxygen electrode; such sensors can be employed for the determination of the content of lignin-like and phenolic compounds in waste waters.

The Direct Determination of I131 in Heterogeneous Fecal Specimens

1961 ◽  
Vol 41 (4) ◽  
pp. 380-384 ◽  
Author(s):  
Arthur F. Dratz ◽  
James C. Coberly
Keyword(s):  
Direct Determination
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