Aerobic soil degradation data on 2,4-D from the EU assessment in 2014

+ + +

The five datasets were extracted from the active substance evaluation dossier +published by EFSA. Kinetic evaluations shown for these datasets are intended +to illustrate and advance kinetic modelling. The fact that these data and +some results are shown here does not imply a license to use them in the +context of pesticide registrations, as the use of the data may be +constrained by data protection regulations.

+ +

D24_2014

+ + +

Format

+ +

An mkindsg object grouping five datasets

Source

+ +

Hellenic Ministry of Rural Development and Agriculture (2014) +Final addendum to the Renewal Assessment Report - public version - 2,4-D +Volume 3 Annex B.8 Fate and behaviour in the environment +http://registerofquestions.efsa.europa.eu/roqFrontend/outputLoader?output=ON-3812

Details

+ +

Data for the first dataset are from p. 685. Data for the other four +datasets were used in the preprocessed versions given in the kinetics +section (p. 761ff.), with the exception of residues smaller than 1 for DCP +in the soil from Site I2, where the values given on p. 694 were used.

The R code used to create this data object is installed with this package +in the 'dataset_generation' directory. In the code, page numbers are given for +specific pieces of information in the comments.

+ +

Examples

print(D24_2014)
+
#> <mkindsg> holding 5 mkinds objects
+#> Title $title:  Aerobic soil degradation data on 2,4-D from the EU assessment in 2014 
+#> Occurrence of observed compounds $observed_n:
+#> D24 DCP DCA 
+#>   5   4   4 
+#> Time normalisation factors $f_time_norm:
+#> [1] 1.6062378 0.7118732 0.7156063 0.7156063 0.8977124
+#> Meta information $meta:
+#>                                 study usda_soil_type study_moisture_ref_type
+#> Mississippi                Cohen 1991      Silt loam                    <NA>
+#> Fayette     Liu and Adelfinskaya 2011      Silt loam                     pF1
+#> RefSol 03-G Liu and Adelfinskaya 2011           Loam                     pF1
+#> Site E1     Liu and Adelfinskaya 2011           Loam                     pF1
+#> Site I2     Liu and Adelfinskaya 2011     Loamy sand                     pF1
+#>             rel_moisture temperature
+#> Mississippi           NA          25
+#> Fayette              0.5          20
+#> RefSol 03-G          0.5          20
+#> Site E1              0.5          20
+#> Site I2              0.5          20
# \dontrun{
+print(D24_2014$ds[[1]], data = TRUE)
+
#> <mkinds> with $title:  Mississippi 
+#> Observed compounds $observed:  D24 
+#> Sampling times $sampling_times:
+#> 0, 2, 4, 7, 15, 24, 35, 56, 71, 114, 183, 273, 365 
+#> With a maximum of  1  replicates
+#>    time  D24
+#> 1     0 96.8
+#> 2     2 81.0
+#> 3     4 81.7
+#> 4     7 88.2
+#> 5    15 66.3
+#> 6    24 72.9
+#> 7    35 62.6
+#> 8    56 54.6
+#> 9    71 35.2
+#> 10  114 18.0
+#> 11  183 11.3
+#> 12  273  9.9
+#> 13  365  6.3
m_D24 = mkinmod(D24 = mkinsub("SFO", to = "DCP"),
+  DCP = mkinsub("SFO", to = "DCA"),
+  DCA = mkinsub("SFO"))
+
#> Temporary DLL for differentials generated and loaded
print(m_D24)
+
#> <mkinmod> model generated with
+#> Use of formation fractions $use_of_ff: max 
+#> Specification $spec:
+#> $D24
+#> $type: SFO; $to: DCP; $sink: TRUE
+#> $DCP
+#> $type: SFO; $to: DCA; $sink: TRUE
+#> $DCA
+#> $type: SFO; $sink: TRUE
+#> Coefficient matrix $coefmat available
+#> Compiled model $cf available
+#> Differential equations:
+#> d_D24/dt = - k_D24 * D24
+#> d_DCP/dt = + f_D24_to_DCP * k_D24 * D24 - k_DCP * DCP
+#> d_DCA/dt = + f_DCP_to_DCA * k_DCP * DCP - k_DCA * DCA
m_D24_2 = mkinmod(D24 = mkinsub("DFOP", to = "DCP"),
+  DCP = mkinsub("SFO", to = "DCA"),
+  DCA = mkinsub("SFO"))
+
#> Temporary DLL for differentials generated and loaded
print(m_D24_2)
+
#> <mkinmod> model generated with
+#> Use of formation fractions $use_of_ff: max 
+#> Specification $spec:
+#> $D24
+#> $type: DFOP; $to: DCP; $sink: TRUE
+#> $DCP
+#> $type: SFO; $to: DCA; $sink: TRUE
+#> $DCA
+#> $type: SFO; $sink: TRUE
+#> Compiled model $cf available
+#> Differential equations:
+#> d_D24/dt = - ((k1 * g * exp(-k1 * time) + k2 * (1 - g) * exp(-k2 *
+#>            time)) / (g * exp(-k1 * time) + (1 - g) * exp(-k2 * time)))
+#>            * D24
+#> d_DCP/dt = + f_D24_to_DCP * ((k1 * g * exp(-k1 * time) + k2 * (1 - g) *
+#>            exp(-k2 * time)) / (g * exp(-k1 * time) + (1 - g) * exp(-k2
+#>            * time))) * D24 - k_DCP * DCP
+#> d_DCA/dt = + f_DCP_to_DCA * k_DCP * DCP - k_DCA * DCA
# }
+

+ +