Example datasets from Attachment 1 to the NAFTA SOP published 2015

Data taken from from Attachment 1 of the SOP.

NAFTA_SOP_Attachment

Format

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       95.8401 4.67e-21 92.245 99.4357
#> k_parent_sink   0.0102 3.92e-12  0.009  0.0117
#> sigma           4.8230 3.81e-06  3.214  6.4318
#> 
#> $IORE
#>                     Estimate Pr(>t)    Lower    Upper
#> parent_0            1.01e+02     NA 9.91e+01 1.02e+02
#> k__iore_parent_sink 1.54e-05     NA 4.08e-06 5.84e-05
#> N_parent            2.57e+00     NA 2.25e+00 2.89e+00
#> sigma               1.68e+00     NA 1.12e+00 2.24e+00
#> 
#> $DFOP
#>          Estimate   Pr(>t)   Lower    Upper
#> parent_0 9.99e+01 1.41e-26 98.8116 101.0810
#> k1       2.67e-02 5.05e-06  0.0243   0.0295
#> k2       3.41e-12 5.00e-01  0.0000      Inf
#> g        6.47e-01 3.67e-06  0.6248   0.6677
#> sigma    1.27e+00 8.91e-06  0.8395   1.6929
#> 
#> 
#> 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 3.70e+11 2.03e+11
#> 
#> Representative half-life:
#> [1] 321.5119
  plot(nafta_att_p5a)