From 36036b5901223591e7e21e8b73d8cd1fb034f4cb Mon Sep 17 00:00:00 2001 From: Johannes Ranke Date: Tue, 16 May 2017 15:43:50 +0200 Subject: Finish the Step 1 calculator including tests Some cleaning up. PELMO facilities do not currently work at my end, as I have no working wine installation on this computer --- docs/reference/GUS.html | 97 +++++++++++++++++++++++++++++++------------------ 1 file changed, 62 insertions(+), 35 deletions(-) (limited to 'docs/reference/GUS.html') diff --git a/docs/reference/GUS.html b/docs/reference/GUS.html index f65c6fd..6f29e72 100644 --- a/docs/reference/GUS.html +++ b/docs/reference/GUS.html @@ -25,12 +25,14 @@ - + + + @@ -75,7 +77,7 @@ the following equation $$GUS = \log_{10} DT50_{soil} (4 - \log_{10} K_{oc})$$

-
GUS(...)
+    
GUS(...)
 
 # S3 method for numeric
 GUS(DT50, Koc, ...)
@@ -89,51 +91,76 @@ $$GUS = \log_{10} DT50_{soil} (4 - \log_{10} K_{oc})$$

print(x, ..., digits = 1)

Arguments

-
-
...
-
Included in the generic to allow for further arguments later. Therefore -this also had to be added to the specific methods.
-
DT50
-
Half-life of the chemical in soil. Should be a field + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
...

Included in the generic to allow for further arguments later. Therefore +this also had to be added to the specific methods.

DT50

Half-life of the chemical in soil. Should be a field half-life according to Gustafson (1989). However, leaching to the sub-soil can not completely be excluded in field dissipation experiments and Gustafson did not refer to any normalisation procedure, but says the field study should -be conducted under use conditions. -

Koc
-
The sorption constant normalised to organic carbon. Gustafson +be conducted under use conditions.

Koc

The sorption constant normalised to organic carbon. Gustafson does not mention the nonlinearity of the sorption constant commonly found and usually described by Freundlich sorption, therefore it is unclear at which reference concentration the Koc should be observed -(and if the reference concentration would be in soil or in porewater). -

chent
-
If a chent is given with appropriate information present in its -chyaml field, this information is used, with defaults specified below.
-
degradation_value
-
Which of the available degradation values should -be used?
-
lab_field
-
Should laboratory or field half-lives be used? This +(and if the reference concentration would be in soil or in porewater).

chent

If a chent is given with appropriate information present in its +chyaml field, this information is used, with defaults specified below.

degradation_value

Which of the available degradation values should +be used?

lab_field

Should laboratory or field half-lives be used? This defaults to lab in this implementation, in order to avoid double-accounting for mobility. If comparability with the original GUS values given by Gustafson (1989) is desired, non-normalised first-order -field half-lives obtained under actual use conditions should be used. -

redox
-
Aerobic or anaerobic degradation data
-
sorption_value
-
Which of the available sorption values should be used? +field half-lives obtained under actual use conditions should be used.

redox

Aerobic or anaerobic degradation data

sorption_value

Which of the available sorption values should be used? Defaults to Kfoc as this is what is generally available from the European pesticide peer review process. These values generally use a reference concentration of 1 mg/L in porewater, that means they would be expected to -be Koc values at a concentration of 1 mg/L in the water phase. -

degradation_aggregator
-
Function for aggregating half-lives
-
sorption_aggregator
-
Function for aggregation Koc values
-
x
-
An object of class GUS_result to be printed
-
digits
-
The number of digits used in the print method
- +be Koc values at a concentration of 1 mg/L in the water phase.

degradation_aggregator

Function for aggregating half-lives

sorption_aggregator

Function for aggregation Koc values

x

An object of class GUS_result to be printed

digits

The number of digits used in the print method

Value

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