Stripping Chrono Potentiometry
This page documents the Stripping Chrono Potentiometry (SCP) method.
pypalmsens.StrippingChronoPotentiometry
Create stripping potentiometry method parameters.
Chronopotentiometric Stripping or Stripping chronopotentiometry is a sensitive analytical technique. The sequence of a stripping chronopotentiometry measurement:
- Apply conditioning potential, if conditioning time > 0.
- Apply deposition potential, if deposition time > 0.
- Apply deposition potential and wait for equilibration time.
- If the stripping current is set to 0 then the cell is switched off. Otherwise,
the specified constant current is applied. The measurement with a rate of 40 kHz starts. The measurement
stops when either the measured potential is below ‘end_potential’ or the
measurement_timeis exceeded.
Methods:
-
to_dict–Return the technique instance as a new key/value dictionary mapping.
-
from_dict–Structure technique instance from dict.
-
from_method_id–Create new instance of appropriate technique from method ID.
Attributes:
-
general(General) –Sets general/other settings.
-
data_processing(DataProcessing) –Set the data processing settings.
-
measurement_triggers(MeasurementTriggers) –Set the trigger at measurement settings.
-
equilibrion_triggers(EquilibrationTriggers) –Set the trigger at equilibration settings.
-
post_measurement(PostMeasurement) –Set the post measurement settings.
-
pretreatment(Pretreatment) –Set the pretreatment settings.
-
current_range(CurrentRange) –Set the autoranging current.
-
id(Literal['scp']) –Unique method identifier.
-
potential_range(AllowedPotentialRanges) –Fixed potential range.
-
current(float) –The stripping current to apply.
-
applied_current_range(AllowedCurrentRanges) –Applied current range.
-
end_potential(float) –Potential where the measurement at stops in V .
-
measurement_time(float) –The maximum measurement time in s.
-
bandwidth(None | float) –Override the bandwidth filter cutoff frequency (in Hz).
general
class-attribute
instance-attribute
Sets general/other settings.
data_processing
class-attribute
instance-attribute
data_processing: DataProcessing = Field(default_factory=DataProcessing)
Set the data processing settings.
measurement_triggers
class-attribute
instance-attribute
measurement_triggers: MeasurementTriggers = Field(default_factory=MeasurementTriggers)
Set the trigger at measurement settings.
equilibrion_triggers
class-attribute
instance-attribute
equilibrion_triggers: EquilibrationTriggers = Field(default_factory=EquilibrationTriggers)
Set the trigger at equilibration settings.
post_measurement
class-attribute
instance-attribute
post_measurement: PostMeasurement = Field(default_factory=PostMeasurement)
Set the post measurement settings.
pretreatment
class-attribute
instance-attribute
pretreatment: Pretreatment = Field(default_factory=Pretreatment)
Set the pretreatment settings.
current_range
class-attribute
instance-attribute
current_range: CurrentRange = Field(default_factory=CurrentRange)
Set the autoranging current.
potential_range
class-attribute
instance-attribute
potential_range: AllowedPotentialRanges = '500mV'
Fixed potential range.
See pypalmsens.settings.AllowedPotentialRanges for options.
current
class-attribute
instance-attribute
current: float = 0.0
The stripping current to apply.
Note that this value acts as a multiplier in the applied current range. So if 10 uA is the applied current range and 1.5 is given as current value, the applied current will be 15 uA.
If the stripping current is set to 0, then chemical stripping is performed, otherwise it is chemical constant current stripping.
applied_current_range
class-attribute
instance-attribute
applied_current_range: AllowedCurrentRanges = '100uA'
Applied current range.
See pypalmsens.settings.AllowedCurrentRanges for options.
end_potential
class-attribute
instance-attribute
end_potential: float = 0.0
Potential where the measurement at stops in V .
measurement_time
class-attribute
instance-attribute
measurement_time: float = 1.0
The maximum measurement time in s.
This value should always exceed the required measurement time.
It only limits the time of the measurement.
When the potential response is erroneously and end_potential is not reached within this time,
the measurement is aborted.
bandwidth
class-attribute
instance-attribute
bandwidth: None | float = None
Override the bandwidth filter cutoff frequency (in Hz).
to_dict
Return the technique instance as a new key/value dictionary mapping.
Source code in src/pypalmsens/_methods/base.py
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from_dict
classmethod
Structure technique instance from dict.
Opposite of .to_dict()
Source code in src/pypalmsens/_methods/base.py
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from_method_id
classmethod
from_method_id(id: str) -> BaseTechnique
Create new instance of appropriate technique from method ID.
Source code in src/pypalmsens/_methods/base.py
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