Potentiometric Stripping Analysis (PSA) - Revision history

Oliver at 03:29, 25 April 2017

2017-04-25T03:29:26Z

Oliver at 06:35, 11 April 2017

2017-04-11T06:35:53Z

Oliver at 06:35, 11 April 2017

2017-04-11T06:35:12Z

Oliver at 06:19, 11 April 2017

2017-04-11T06:19:55Z

Oliver at 06:19, 11 April 2017

2017-04-11T06:19:27Z

Oliver: Created page with "Here are some instructions for use of the potentiometric stripping analysis (PSA) feature on newer model ER466 units with Chart software. When you open the Potentiostat con..."

2017-04-11T06:18:49Z

Created page with "Here are some instructions for use of the potentiometric stripping analysis (PSA) feature on newer model ER466 units with Chart software. When you open the Potentiostat con..."

New page

Here are some instructions for use of the potentiometric stripping analysis (PSA) feature on newer model ER466 units with Chart software.

When you open the Potentiostat control panel window (see ER466 Potentiostat Manual page 23) you will see a newly added "PSA" button (this is not shown the diagram in the manual).

1. The PSA button accesses a control panel where you set a set a series of potentials and durations that are applied when you click the 'Start' button to begin an experiment.

2. After these voltage levels have been applied, and while still recording, the potentiostat auxiliary electrode is automatically disconnected (so the current signal falls to zero) while the potential (RE to WE) is monitored. You can set a duration for this monitoring step.

You can repeat the sequence of steps above (1-2) any number of times to get a continuous signal.

When you 'Stop' recording, the potentiostat is re-set.

It may take a bit of trial and error to get the potentials and durations right for your system.

If you want to repeat the PSA cycles quite quickly (milliseconds) and measure the potential near the end of each PSA cycle, this could be done with the Find command so that the final potential at each PSA cycle could be plotted on another channel.

Another application for this PSA feature is to do an experiment called 'potentiometric stripping analysis'. In this experiment the steps within each PSA cycle can actually be quite long (seconds).

← Older revision		Revision as of 03:29, 25 April 2017
Line 1:		Line 1:
−	Here are some instructions for use of the potentiometric stripping analysis (PSA) feature on newer model [http://www.edaq.com/ER466 ER466 Integrated Potentiostat units] with [~~http://~~http://www.edaq.com/ES500 Chart software].	+	Here are some instructions for use of the potentiometric stripping analysis (PSA) feature on newer model [http://www.edaq.com/ER466 ER466 Integrated Potentiostat units] with [http://www.edaq.com/ES500 Chart software].

@@ Line 1: / Line 1: @@
 Here are some instructions for use of the potentiometric stripping analysis (PSA) feature on newer model [http://www.edaq.com/ER466 ER466 Integrated Potentiostat units] with [http://http://www.edaq.com/ES500 Chart software].
-−
 When you open the Potentiostat control panel window (see the manual for the ER466 Potentiostat page 23) you will see a newly added "PSA" button (this is not shown the diagram in the manual).
-−
 # The PSA button accesses a control panel where you set a set a series of potentials and durations that are applied when you click the 'Start' button to begin an experiment.
 # After these voltage levels have been applied, and while still recording, the potentiostat auxiliary electrode is automatically disconnected (so the current signal falls to zero) while the potential (RE to WE) is monitored. You can set a duration for this monitoring step.
-−
 You can repeat the sequence of steps above (1-2) any number of times to get a continuous signal.

← Older revision		Revision as of 06:35, 11 April 2017
Line 1:		Line 1:
−	Here are some instructions for use of the potentiometric stripping analysis (PSA) feature on newer model ER466 units with Chart software.	+	Here are some instructions for use of the potentiometric stripping analysis (PSA) feature on newer model [http://www.edaq.com/ER466 ER466 Integrated Potentiostat units] with [http://http://www.edaq.com/ES500 Chart software].


−	When you open the Potentiostat control panel window (see ER466 Potentiostat ~~Manual~~ page 23) you will see a newly added "PSA" button (this is not shown the diagram in the manual).	+	When you open the Potentiostat control panel window (see the manual for the ER466 Potentiostat page 23) you will see a newly added "PSA" button (this is not shown the diagram in the manual).

@@ Line 8: / Line 8: @@
 # After these voltage levels have been applied, and while still recording, the potentiostat auxiliary electrode is automatically disconnected (so the current signal falls to zero) while the potential (RE to WE) is monitored. You can set a duration for this monitoring step.
 You can repeat the sequence of steps above (1-2) any number of times to get a continuous signal.
 When you 'Stop' recording, the potentiostat is re-set.
 It may take a bit of trial and error to get the potentials and durations right for your system.
 If you want to repeat the PSA cycles quite quickly (milliseconds) and measure the potential near the end of each PSA cycle, this could be done with the Find command so that the final potential at each PSA cycle could be plotted on another channel.