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USE OF AN ION-SELECTIVE ELECTRODE AND METHOD FOR SELECTIVE DETERMINATION OF CARBON DIOXIDE IN BODY FLUIDS
USE OF AN ION-SELECTIVE ELECTRODE AND METHOD FOR SELECTIVE DETERMINATION OF CARBON DIOXIDE IN BODY FLUIDS
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机译:离子选择电极的使用和选择性测定体液中二氧化碳的方法
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摘要
The present invention concerns an ion-selective electrode for interferent-free determination of carbon dioxide and other analytes in aqueous samples. The invention also relates to a membrane structure and a method for analysis of body fluids containing analytes and interferents. The electrode according to the present invention comprises an internal reference electrode (1, 2), a liquid-phase ion-selective membrane (3) and a discriminating membrane (4) comprising a hydrophilic membrane having a medium pore size of less than 0.1 mu m. The liquid-phase ion-selective membrane is placed in intimate contact with the discriminating membrane, which preferably comprises a membrane made from cellulose fibers, regenerated cellulose fibers or fibers of cellulose derivatives.
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