Concentrations settings

Selection settings

Table 59 Selection settings for module Concentrations.
Name Type Description
Concentrations tier
ConcentrationsTier Specifies the concentration data should be treated according to a pre-defined tier or custom.
Filter samples exceeding the concentration limits

Boolean

If checked, samples with at least one substance concentration higher than some factor (concentration limit filter exceedance factor) times the MRL are filtered out.
Concentration limit filter exceedance factor

Numeric

The multiplication factor for the concentration limit exceedance filter.
Use substance conversion rules

Boolean

If checked, concentrations are modelled in terms of active substances (using substance conversion).
Substance conversion method
SubstanceTranslationAllocationMethod Allocation method for assigning active substance concentrations from measured substance concentrations based on substance translations.
Retain all allocated substances after active substance allocation

Boolean

If checked, all allocated substances kept after substance conversion. Otherwise, the concentration data is restricted to the active substances of the assessment group.
Account for substance authorisations in substance conversions

Boolean

Account for substance authorisations when allocating measured substances to active substance using substance conversions.
Fix duplicate substance allocation inconsistencies

Boolean

Resolve inconsistencies when active substance allocation leads to multiple concentration value estimates for the same active substance. This method uses the mean of the positives or zero concentrations when available, or else the lowest of the non-detect values.
Use extrapolation rules

Boolean

Use extrapolation rules to extrapolate food samples for foods with a limited amount of samples (data poor foods) from other foods (data rich foods).
Threshold for extrapolation

Numeric

Threshold for extrapolation.
Restrict extrapolations to equal MRLs

Boolean

Restrict extrapolations to equal MRLs.
Restrict extrapolations to authorised uses

Boolean

Only extrapolate if substance use is authorised.
Impute water concentrations

Boolean

Impute constant concentration values on the selected (water) commodity.
Water commodity

AlphaNumeric

The commodity for which constant concentration values should be added.
Water concentration value (µg/kg)

Numeric

Constant concentration value that should be used for water (in µg/kg).
Restrict water imputation to the five most toxic substances

Boolean

Restrict water imputation to the five most toxic substances.
Restrict water imputation to authorised uses

Boolean

Restrict water imputation to authorised uses.
Include focal commodity concentrations

Boolean

Specifies whether there is monitoring data that should replace part of the consumption data for the specified focal commodities.
Focal commodity foods

AlphaNumeric

The foods for which background concentration data are to be replaced by focal commodity concentrations.
Focal commodity substances

AlphaNumeric

The substances for which background concentration data are to be replaced by focal commodity concentrations.
Focal commodity concentrations replacement method
FocalCommodityReplacementMethod Replacement method to be used for replacing base concentration data with concentration data of the focal commodity/commodities concentrations.
Focal commodity substance occurrence percentage

Numeric

Anticipated occurrence percentage / agricultural use percentage of the focal commodity.
Adjustment factor for the focal food/substance concentration

Numeric

Optional adjustment factor for the focal food/substance concentration. E.g., the expected ratio of mean monitoring concentration and mean field trial concentration.
Use deterministic substance conversions for focal commodity

Boolean

Convert measured substance concentrations of focal commodity to active substance concentrations using deterministic substance conversion factors.
Filter samples by specific property values (subset selection)

Boolean

Specifies whether a subset selection on specific sample properties should be made (e.g., by country or by year).
Sample locations

AlphaNumeric

The locations for which samples are filtered.
Sample years

AlphaNumeric

The years for which samples are filtered.
Restrict to specific modelled foods (modelled foods subset)

Boolean

If checked, then the assessment is restricted to the specified modelled foods.

Uncertainty settings

Table 60 Uncertainty settings for module Concentrations.
Name Type Description
Resample concentrations

Boolean

Specifies whether concentrations are resampled by empirical bootstrap or using a parametric uncertainty model.