BCF_regression: Estimate the bio concentration factor in two different ways

In KWB-R/kwb.fcr: Fertilizer chemical risk assessment

Estimate the bio concentration factor in two different ways

Description

Estimation via direct or indirect logarithmic (log 10?) linear regression including pH, organic carbon and soil concentration

Usage

BCF_regression(
  constant,
  beta_ph,
  beta_org,
  beta_conc,
  regType = "direct",
  pH,
  org_c,
  conc
)

Arguments

constant	Log constant in linear Kd regression
beta_ph, beta_org, beta_conc	Log coefficient for pH, organic carbon and soil concentration in log-linear Kd regression
regType	Chacter specifying the way the K_d value is calculated. Either "direct" which means that the regression directly leads to the sorption coefficient or"indirect" which means the regression estimates a concentration in pore water and the sorption coefficient is subsequently be calculated by the quotient of soil and pore water concentration.
pH	pH value
org_c	Organic carbon content in percent.
conc	Soil concentration in mg/kg

Details

The constant value, the regression parameters (beta) and the soil characteristics can be single numeric values or vectors of the same length.

Value

A vector of bio concentration factors without unit. It is defined as concentration in plant dry matter divided by concentration in soil.

KWB-R/kwb.fcr documentation built on Nov. 14, 2023, 5:17 a.m.