Potentiometry

Category:OSWe8cedede568546259abe64f62b5ddcb6 /
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Potentiometry [OSWe8cedede568546259abe64f62b5ddcb6]
ID OSWe8cedede568546259abe64f62b5ddcb6
UUID e8cedede-5685-4625-9abe-64f62b5ddcb6
Label Potentiometry
Machine compatible name Potentiometry
Statements (outgoing)
Statements (incoming)

Description

Electrochemical measurement principle where the potential difference between an indicator electrode and a reference electrode is measured.

Item
Type(s)/Category(s) EmmoTerm
Term
EmmoTerm
Superclass
Comment
  • For measurements using ion-selective electrodes, the measurement is made under equi- librium conditions what means that the macroscopic electric current is zero and the con- centrations of all species are uniform throughout the solution. The indicator electrode is in direct contact with the analyte solution, whereas the reference electrode is usually separated from the analyte solution by a salt bridge. The potential difference between the indicator and reference electrodes is normally directly proportional to the logarithm of the activity (concentration) of the analyte in the solution (Nernst equation). See also ion selec- tive electrode. [en]
  • Method of electroanalytical chemistry based on measurement of an electrode potential. [en]
  • URIhttp://emmo.info/electrochemistry#electrochemistry_e8cedede_5685_4625_9abe_64f62b5ddcb6
    jsondata
    uuid"e8cedede-5685-4625-9abe-64f62b5ddcb6"
    name"Potentiometry"
    label
    text"Potentiometry"
    lang"en"
    description
    text"Electrochemical measurement principle where the potential difference between an indicator electrode and a reference electrode is measured."
    lang"en"
    type
    "Category:OSW57beed5e1294434ba77bb6516e461456"
    uri"http://emmo.info/electrochemistry#electrochemistry_e8cedede_5685_4625_9abe_64f62b5ddcb6"
    comment
    text"For measurements using ion-selective electrodes, the measurement is made under equi- librium conditions what means that the macroscopic electric current is zero and the con- centrations of all species are uniform throughout the solution. The indicator electrode is in direct contact with the analyte solution, whereas the reference electrode is usually separated from the analyte solution by a salt bridge. The potential difference between the indicator and reference electrodes is normally directly proportional to the logarithm of the activity (concentration) of the analyte in the solution (Nernst equation). See also ion selec- tive electrode."
    lang"en"
    text"Method of electroanalytical chemistry based on measurement of an electrode potential."
    lang"en"
    subClassOf
    "http://emmo.info/electrochemistry#electrochemistry_10359c79_cdf2_401a_83ee_d22e7fbb2ad1"
    "http://emmo.info/electrochemistry#electrochemistry_64bf0969_37a1_4aaf_82e9_68462847ac65"

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