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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:

  1. Apply conditioning potential, if conditioning time > 0.
  2. Apply deposition potential, if deposition time > 0.
  3. Apply deposition potential and wait for equilibration time.
  4. 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_time is 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 class-attribute instance-attribute

general: General = Field(default_factory=General)

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.

id class-attribute instance-attribute

id: Literal['scp'] = 'scp'

Unique method identifier.

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

to_dict() -> dict[str, Any]

Return the technique instance as a new key/value dictionary mapping.

Source code in src/pypalmsens/_methods/base.py
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def to_dict(self) -> dict[str, Any]:
    """Return the technique instance as a new key/value dictionary mapping."""
    return self.model_dump()

from_dict classmethod

from_dict(obj: dict[str, Any]) -> BaseTechnique

Structure technique instance from dict.

Opposite of .to_dict()

Source code in src/pypalmsens/_methods/base.py
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@classmethod
def from_dict(cls, obj: dict[str, Any]) -> BaseTechnique:
    """Structure technique instance from dict.

    Opposite of `.to_dict()`"""
    return cls.model_validate(obj)

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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@classmethod
def from_method_id(cls, id: str) -> BaseTechnique:
    """Create new instance of appropriate technique from method ID."""
    new = cls._registry[id]
    return new()