Datasets on aerobic soil metabolism of 2,4,5-T in six soils

Time course of 2,4,5-trichlorophenoxyacetic acid, and the corresponding 2,4,5-trichlorophenol and 2,4,5-trichloroanisole as recovered in diethylether extracts.

mccall81_245T

Format

A dataframe containing the following variables.

name

the name of the compound observed. Note that T245 is used as an acronym for 2,4,5-T. T245 is a legitimate object name in R, which is necessary for specifying models using mkinmod.

time

a numeric vector containing sampling times in days after treatment

value

a numeric vector containing concentrations in percent of applied radioactivity

soil

a factor containing the name of the soil

Source

McCall P, Vrona SA, Kelley SS (1981) Fate of uniformly carbon-14 ring labeled 2,4,5-Trichlorophenoxyacetic acid and 2,4-dichlorophenoxyacetic acid. J Agric Chem 29, 100-107 http://dx.doi.org/10.1021/jf00103a026

Examples

  SFO_SFO_SFO <- mkinmod(T245 = list(type = "SFO", to = "phenol"),
                         phenol = list(type = "SFO", to = "anisole"),
                         anisole = list(type = "SFO"))
#> Error in mkinmod(T245 = list(type = "SFO", to = "phenol"), phenol = list(type = "SFO",     to = "anisole"), anisole = list(type = "SFO")): konnte Funktion "mkinmod" nicht finden
  
    fit.1 <- mkinfit(SFO_SFO_SFO, subset(mccall81_245T, soil == "Commerce"), quiet = TRUE)
#> Error in mkinfit(SFO_SFO_SFO, subset(mccall81_245T, soil == "Commerce"),     quiet = TRUE): konnte Funktion "mkinfit" nicht finden
    summary(fit.1, data = FALSE)
#> Error in summary(fit.1, data = FALSE): Objekt 'fit.1' nicht gefunden
    # No convergence, no covariance matrix ...
    # k_phenol_sink is really small, therefore fix it to zero
    fit.2 <- mkinfit(SFO_SFO_SFO, subset(mccall81_245T, soil == "Commerce"),
                   parms.ini = c(k_phenol_sink = 0),
                   fixed_parms = "k_phenol_sink", quiet = TRUE)
#> Error in mkinfit(SFO_SFO_SFO, subset(mccall81_245T, soil == "Commerce"),     parms.ini = c(k_phenol_sink = 0), fixed_parms = "k_phenol_sink",     quiet = TRUE): konnte Funktion "mkinfit" nicht finden
    summary(fit.2, data = FALSE)
#> Error in summary(fit.2, data = FALSE): Objekt 'fit.2' nicht gefunden