MEMBRANE OF ION-SELECTIVE ELECTRODE FOR MEASURING CONTENTS OF NITRATE IONS IN ACID MEDIA

摘要

FIELD: ionometry. SUBSTANCE: anion-seective ligand is introduced into the electrode membrane in addition to nitrate-selective electrode for operation in acid solutions (up to pH=0), which has to be a derivative of n= trifluoracetylbenzene acid. As a result, acid function range is widened to acid range, including solutions with 1 mole of acid for a litre content. Nitrate electrodes known have restrictions about 0.1 mole/liter. EFFECT: improved precision. 1 dwg