Example datasets from Attachment 1 to the NAFTA SOP published 2015

Data taken from from Attachment 1 of the SOP.

NAFTA_SOP_Attachment

Format

Additionally, a list (NAFTA_SOP_Attachment) containing 16 datasets suitable for the evaluation with nafta

Source

NAFTA (2011) Guidance for evaluating and calculating degradation kinetics in environmental media. NAFTA Technical Working Group on Pesticides https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/guidance-evaluating-and-calculating-degradation accessed 2019-02-22

US EPA (2015) Standard Operating Procedure for Using the NAFTA Guidance to Calculate Representative Half-life Values and Characterizing Pesticide Degradation https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedure-using-nafta-guidance

Examples

  nafta_att_p5a <- nafta(NAFTA_SOP_Attachment[["p5a"]], cores = 1)
#> The SFO model is rejected as S_SFO is equal or higher than the critical value S_c
#> The half-life obtained from the IORE model may be used
  print(nafta_att_p5a)
#> Sums of squares:
#>       SFO      IORE      DFOP 
#> 465.21753  56.27506  32.06401 
#> 
#> Critical sum of squares for checking the SFO model:
#> [1] 64.4304
#> 
#> Parameters:
#> $SFO
#>                  Estimate       Pr(>t)        Lower       Upper
#> parent_0      95.84012168 1.095639e-21 92.120517864 99.55972549
#> k_parent_sink  0.01024015 1.710227e-12  0.008996874  0.01165524
#> 
#> $IORE
#>                         Estimate       Pr(>t)        Lower        Upper
#> parent_0            1.007532e+02 2.365797e-26 9.891170e+01 1.025947e+02
#> k__iore_parent_sink 1.544192e-05 8.733384e-02 3.482391e-06 6.847393e-05
#> N_parent            2.569877e+00 1.140446e-11 2.215298e+00 2.924456e+00
#> 
#> $DFOP
#>              Estimate       Pr(>t) Lower Upper
#> parent_0 9.994630e+01 4.330861e-27    NA    NA
#> k1       2.674255e-02 3.171390e-05    NA    NA
#> k2       2.161318e-12 5.000000e-01    NA    NA
#> g        6.465276e-01 2.129114e-05    NA    NA
#> 
#> 
#> DTx values:
#>      DT50     DT90 DT50_rep
#> SFO  67.7 2.25e+02 6.77e+01
#> IORE 58.2 1.07e+03 3.22e+02
#> DFOP 55.5 5.84e+11 3.21e+11
#> 
#> Representative half-life:
#> [1] 321.5119
  plot(nafta_att_p5a)