Determination of nitrate in palladium electroplating baths with a nitrate-ion selective electrode by precipitation titration or direct potentiometry

Abstract 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 by the "indirect" dilution methods due to displacement of volume by lipids and protein. However, there is no unambiguous theoretical basis on which to choose between the various direct ion-selective-electrode techniques and instruments. As an alternative, I propose use of current indirect methods, with numerical correction for the shift in normal sodium values in the presence of abnormal lipid and (or) protein. A table was constructed for making such corrections.

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Determination of chlorine in silicate rocks by ion-exchange chromatography and direct potentiometry with an ion-selective electrode

Talanta ◽

10.1016/0039-9140(79)80008-9 ◽

1979 ◽

Vol 26 (11) ◽

pp. 1027-1028 ◽

Cited By ~ 15

Author(s):

H Akaiwa

Keyword(s):

Ion Exchange ◽

Ion Exchange Chromatography ◽

Exchange Chromatography ◽

Ion Selective Electrode ◽

Selective Electrode ◽

Direct Potentiometry ◽

Silicate Rocks

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Determination of polythionates in an active crater lake by nitrate ion-selective electrode.

GEOCHEMICAL JOURNAL ◽

10.2343/geochemj.22.249 ◽

1988 ◽

Vol 22 (6) ◽

pp. 249-256 ◽

Cited By ~ 2

Author(s):

Yoshiko Fujiwara ◽

Shinji Ohsawa ◽

Kunihiko Watanuki ◽

Bokuichiro Takano

Keyword(s):

Crater Lake ◽

Ion Selective Electrode ◽

Selective Electrode ◽

Nitrate Ion ◽

Active Crater

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ION-SELECTIVE ELECTRODE FOR DETERMINATION OF METFORMIN IN PHARMACEUTICAL PREPARATIONS

Вестник Тверского государственного университета. Серия: Химия ◽

10.26456/vtchem2020.3.13 ◽

2020 ◽

pp. 124-129

Author(s):

Геннадий Иванович Мантров ◽

Мариана Александровна Феофанова ◽

Егор Максимович Грачев

Keyword(s):

Pharmaceutical Preparations ◽

Ion Pair ◽

Ion Selective Electrode ◽

Selective Electrode ◽

Electroactive Materials ◽

Direct Potentiometry

Описана конструкция и электроаналитические характеристики ионселективного электрода (ИСЭ) для количественного определения метформина. В качестве электродноактивных соединений в ИСЭ были использованы ионные ассоциаты метформина с фосфорновольфрамовой(ФВК), фосфорномолибденовой(ФМК) и кремний вольфрамовой кислотами (КВК). Проведено потенциометрическое определение метформина в фармацевтических препаратах. The construction and electroanalytical characteristics of ion-selective electrode (ISE) for metformin are described. Ion pair of metformin with heteropolyacids were tested as electroactive materials for ionometric sensor controls. The ISE was used for direct potentiometry of metformin.

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