ResponseTimeAtAnISE

ResponseTimeAtAnISE [OSW1a104474c3264a29ac2626a05ac8f72c]
ID	OSW1a104474c3264a29ac2626a05ac8f72c
UUID	1a104474-c326-4a29-ac26-26a05ac8f72c
Label	ResponseTimeAtAnISE
Machine compatible name	ResponseTimeAtAnISE
Statements (outgoing)

Statements (incoming)

Description

Duration between the time when an ion-selective electrode and an external reference electrode (the two completing the ion-selective electrode cell) are brought into contact with a sample solution (or the time at which the activity of the ion of interest in solution is changed) and the first time at which the slope of the cell potential vs. time plot (ΔE/Δt) becomes equal to a limiting value selected on the basis of the experimental conditions and/or requirements concerning accuracy.

Item
Type(s)/Category(s)	EmmoTerm

Term

EmmoTerm
Superclass	ElectrochemicalQuantity
Comment	Buck and Lindner suggest a slope of 0.6 mV min-1 . [en] Previously defined response times t95 (corresponding to the 95% change of the potential span) and t* (to 1 mV from the steady value) require prior knowledge of steady-state E values that may not be available. These descriptive quantities underestimate practical response times of ion-selective electrodes in clinical applications where the total span may be narrower than 10 mV. The response time expressed in terms of ΔE/Δt (i.e., rate of cell potential variation with time) seems to be the best choice among non-ideal options. It can be related to t95 and t* through mathematical models, provided that the long-time potential- determining processes are identified. [en]
URI	http://emmo.info/electrochemistry#electrochemistry_1a104474_c326_4a29_ac26_26a05ac8f72c

jsondata

uuid

"1a104474-c326-4a29-ac26-26a05ac8f72c"

name

"ResponseTimeAtAnISE"

label

text	"ResponseTimeAtAnISE"
lang	"en"

description

text

"Duration between the time when an ion-selective electrode and an external reference electrode (the two completing the ion-selective electrode cell) are brought into contact with a sample solution (or the time at which the activity of the ion of interest in solution is changed) and the first time at which the slope of the cell potential vs. time plot (ΔE/Δt) becomes equal to a limiting value selected on the basis of the experimental conditions and/or requirements concerning accuracy."

lang

"en"

type

"Category:OSW57beed5e1294434ba77bb6516e461456"

uri

"http://emmo.info/electrochemistry#electrochemistry_1a104474_c326_4a29_ac26_26a05ac8f72c"

comment

text	"Buck and Lindner suggest a slope of 0.6 mV min-1 ."
lang	"en"

text

"Previously defined response times t95 (corresponding to the 95% change of the potential span) and t* (to 1 mV from the steady value) require prior knowledge of steady-state E values that may not be available. These descriptive quantities underestimate practical response times of ion-selective electrodes in clinical applications where the total span may be narrower than 10 mV. The response time expressed in terms of ΔE/Δt (i.e., rate of cell potential variation with time) seems to be the best choice among non-ideal options. It can be related to t95 and t* through mathematical models, provided that the long-time potential- determining processes are identified."

lang

"en"

subClassOf

"http://emmo.info/electrochemistry#electrochemistry_aecc6094_c6a5_4a36_a825_8a497a2ae112"

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Description

Graph