Linear ionic concentration meter with ion selective electrodes
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چکیده
منابع مشابه
Computer-based automation of concentration measurements with ion-selective electrodes
An integrated computer system consisting of an expandable ionanalyzer and a PC has been used to automate concentration measurements with ion-selective electrodes (ISEs). The ionanalyzer determines ionic concentrations using a reference electrode coupled with an ISE. The measurements and calibrations are carried out in a thermostated sample changer equipped with a flow cell. The data obtained by...
متن کاملDetermination of sodium with ion-selective electrodes.
The advent of ion-selective electrodes made possible the potentiometry of sodium in serum and plasma. These methods were based on dilution of serum, as done in flame photometry, and the results were identical. Analysis of whole blood precludes dilution and so "direct" potentiometry was developed. Results by this technique are variable but tend to compensate for the spurious hyponatremias found ...
متن کاملBicarbonate interference with chloride-ion-selective electrodes.
echocardiography. All attending phy-sicians/cardiologists were blinded to the BNP results. To determine the diagnostic accuracy of the two assays for CHF, we performed ROC plot analysis, and areas under the curve (AUC) were calculated for both BNP assays. Comparisons between AUC were assessed according to the method of Hanley and McNeil (10). Cutoff values for the two methods were determined at...
متن کاملApplications of Ion Selective Electrodes
Enzyme sensor for organophosphorus insecticides organophosphorus hydrolase in a polymer membrane on a pH sensor is used to catalyse the hydrolysis of compounds with phoshate ester functionality. The detected [H+] change is proportional to the concentration of the phosphate ester insecticide. This is a good example of the use of an enzyme to give selectivity to a specific class of compounds. Unf...
متن کاملIon Activity Scales for Use with Selective Ion-sensitive Electrodes
The development of a variety of selective ion-sensitive electrodes focuses attention on numerical scales for the activity of individual ionic species, for these electrodes measure the activity of the selected ion only relative to that of the same species in a reference solution of known or assigned ion activity. Nevertheless, scales of ion activity must be based on a convention from outside the...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1975
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.24.101