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)
#> Warning: Could not estimate covariance matrix; singular system.
#> 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 1.10e-21 92.121 99.5597 #> k_parent_sink 0.0102 1.71e-12 0.009 0.0117 #> #> $IORE #> Estimate Pr(>t) Lower Upper #> parent_0 1.01e+02 2.37e-26 9.89e+01 1.03e+02 #> k__iore_parent_sink 1.54e-05 8.73e-02 3.48e-06 6.85e-05 #> N_parent 2.57e+00 1.14e-11 2.22e+00 2.92e+00 #> #> $DFOP #> Estimate Pr(>t) Lower Upper #> parent_0 9.99e+01 4.33e-27 NA NA #> k1 2.67e-02 3.17e-05 NA NA #> k2 2.16e-12 5.00e-01 NA NA #> g 6.47e-01 2.13e-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)