Define a pesticide with physico-chemical and toxicity properties

Creates a list of parameters that define a pesticide or chemical substance, including its identity, degradation rates, sorption properties, and toxicity to aquatic organisms.

Usage

chemical(
  display_name,
  tmoa_id,
  MW,
  ksetl_m_day,
  kvolat_m_day,
  sol_ppm,
  koc_cm3_g,
  dinc_m,
  fet_cm,
  kf_day,
  kw_day,
  ks_sat_day,
  ks_unsat_day,
  kw_temp,
  ks_sat_temp,
  ks_unsat_temp,
  Q10_kw,
  Q10_ks_sat,
  Q10_ks_unsat,
  ssd_acute_mu,
  ssd_acute_sigma,
  ssd_chronic_mu,
  ssd_chronic_sigma
)

Arguments

display_name

[character(1)]
The common name of the chemical (e.g., "Acetamiprid").

tmoa_id

[character(1)]
Identifier for the toxic mode of action (e.g., "NicotinicAcetylcholine").

MW

[numeric(1)]
Molecular weight in grams per mole.

ksetl_m_day

[numeric(1)]
Settling rate, representing particle-bound transfer to sediment.

kvolat_m_day

[numeric(1)]
Volatilization rate from water to air.

sol_ppm

[numeric(1)]
Water solubility.

koc_cm3_g

[numeric(1)]
Organic carbon-water partition coefficient (Koc).

dinc_m

[numeric(1)]
Depth of incorporation into soil/sediment.

fet_cm

[numeric(1)]
Film thickness for exchange at the sediment-water interface.

kf_day

[numeric(1)]
Degradation rate in floodwater.

kw_day

[numeric(1)]
Degradation rate in the water column.

ks_sat_day

[numeric(1)]
Degradation rate in saturated sediment.

ks_unsat_day

[numeric(1)]
Degradation rate in unsaturated sediment.

kw_temp

[numeric(1)]
Reference temperature for kw_day.

ks_sat_temp

[numeric(1)]
Reference temperature for ks_sat_day.

ks_unsat_temp

[numeric(1)]
Reference temperature for ks_unsat_day.

Q10_kw

[numeric(1)]
Q10 coefficient for temperature correction of degradation in water.

Q10_ks_sat

[numeric(1)]
Q10 coefficient for temperature correction in saturated sediment.

Q10_ks_unsat

[numeric(1)]
Q10 coefficient for temperature correction in unsaturated sediment.

ssd_acute_mu

[numeric(1)]
Mean (log10 scale) of the acute species sensitivity distribution.

ssd_acute_sigma

[numeric(1)]
Standard deviation (log10 scale) of the acute species sensitivity distribution.

ssd_chronic_mu

[numeric(1)]
Mean (log10 scale) of the chronic species sensitivity distribution.

ssd_chronic_sigma

[numeric(1)]
Standard deviation (log10 scale) of the chronic species sensitivity distribution.

Value

An object of class erahumed_chemical.