Method for measuring acidity

Method for measuring acidity

An acidity measuring apparatus for determining free fatty acids in a sample comprises a measuring container (7) accommodating an electrolyte solution consisting of a 1,2-benzoquinone derivative or a 1,4-benzoquinone derivative, an organic solvent, an electrolyte and the acid-containing sample; a wor...

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Hauptverfasser: YABU, HIDEFUMI, KUSU, FUMIYO, HANADA, YASUYUKI, NISHIO, TETSUYA, TAKAMURA, KIYOKO, MORI, KAZUYOSHI, HIRAISHI, YUJI, HASHIMOTO, HIDEAKI, NISHIDA, TAKESHI, KUSAKABE, TSUYOSHI, SOEDA, TETSUJI
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator YABU, HIDEFUMI
KUSU, FUMIYO
HANADA, YASUYUKI
NISHIO, TETSUYA
TAKAMURA, KIYOKO
MORI, KAZUYOSHI
HIRAISHI, YUJI
HASHIMOTO, HIDEAKI
NISHIDA, TAKESHI
KUSAKABE, TSUYOSHI
SOEDA, TETSUJI
description An acidity measuring apparatus for determining free fatty acids in a sample comprises a measuring container (7) accommodating an electrolyte solution consisting of a 1,2-benzoquinone derivative or a 1,4-benzoquinone derivative, an organic solvent, an electrolyte and the acid-containing sample; a working electrode (9), a counter electrode (8) and a reference electrode section (10) provided in the measuring container and immersed in the electrolyte solution; and a control section (26) for sweeping the potential of the working electrode within a prescribed range and for detecting the value of the current flowing between the working electrode and the counter electrode. The peak corresponds to oxidation of the product formed by reaction of the acid with the quinone. Preferred quinones are 3,5-ditertiary-butyl-1,2-benzoquinone Ä3383-21-9Ü and 2,6-dimethyl-1,4-benzoquinone Ä527-61-7Ü.
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The peak corresponds to oxidation of the product formed by reaction of the acid with the quinone. 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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title Method for measuring acidity
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