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

Share:

Description

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.

Usage

1
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

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
  SFO_SFO_SFO <- mkinmod(T245 = list(type = "SFO", to = "phenol"),
                         phenol = list(type = "SFO", to = "anisole"),
                         anisole = list(type = "SFO"))
  ## Not run: 
    fit.1 <- mkinfit(SFO_SFO_SFO, subset(mccall81_245T, soil == "Commerce"), quiet = TRUE)
    summary(fit.1, data = FALSE)
  
## End(Not run)
  # 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)
  summary(fit.2, data = FALSE)

Want to suggest features or report bugs for rdrr.io? Use the GitHub issue tracker.