Inverse modeling of the biodegradation of emerging organic contaminants in the soil-plant system

Carlos Hurtado; Stefan Trapp; Josep M. Bayona

doi:10.1016/j.chemosphere.2016.04.134

Inverse modeling of the biodegradation of emerging organic contaminants in the soil-plant system

Carlos Hurtado, Stefan Trapp, Josep M. Bayona

CSIC

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Abstract

Understanding the processes involved in the uptake and accumulation of organic contaminants into plants is very important to assess the possible human risk associated with. Biodegradation of emerging contaminants in plants has been observed, but kinetical studies are rare. In this study, we analyse experimental data on the uptake of emerging organic contaminants into lettuce derived in a greenhouse experiment. Measured soil, root and leaf concentrations from four contaminants were selected within the applicability domain of a steady-state two-compartment standard plant uptake model: bisphenol A (BPA), carbamazepine (CBZ), triclosan (TCS) and caffeine (CAF). The model overestimated concentrations in most cases, when no degradation rates in plants were entered. Subsequently, biodegradation rates were fitted so that the measured concentrations were met.Obtained degradation kinetics are in the order, BPA <CAF ≈ TCS <CBZ in roots, and BPA ≈ TCS <CBZ

Original language	English
Journal	Chemosphere
Volume	156
Pages (from-to)	236-244
Number of pages	9
ISSN	0045-6535
DOIs	https://doi.org/10.1016/j.chemosphere.2016.04.134
Publication status	Published - 2016

Keywords

Environmental Chemistry
Chemistry (all)
Dissipation
Emerging organic contaminants
Kinetics
Model
Plants
Contamination
Degradation
Energy dissipation
Enzyme kinetics
Inverse problems
Models
Plants (botany)
Risk assessment
Room and pillar mining
Uncertainty analysis
Additional knowledge
Degradation kinetics
Emerging contaminant
Greenhouse experiments
Leaf concentrations
Uptake and accumulations
Biodegradation

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10.1016/j.chemosphere.2016.04.134

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title = "Inverse modeling of the biodegradation of emerging organic contaminants in the soil-plant system",

abstract = "Understanding the processes involved in the uptake and accumulation of organic contaminants into plants is very important to assess the possible human risk associated with. Biodegradation of emerging contaminants in plants has been observed, but kinetical studies are rare. In this study, we analyse experimental data on the uptake of emerging organic contaminants into lettuce derived in a greenhouse experiment. Measured soil, root and leaf concentrations from four contaminants were selected within the applicability domain of a steady-state two-compartment standard plant uptake model: bisphenol A (BPA), carbamazepine (CBZ), triclosan (TCS) and caffeine (CAF). The model overestimated concentrations in most cases, when no degradation rates in plants were entered. Subsequently, biodegradation rates were fitted so that the measured concentrations were met.Obtained degradation kinetics are in the order, BPA <CAF ≈ TCS <CBZ in roots, and BPA ≈ TCS <CBZ ",

keywords = "Environmental Chemistry, Chemistry (all), Dissipation, Emerging organic contaminants, Kinetics, Model, Plants, Contamination, Degradation, Energy dissipation, Enzyme kinetics, Inverse problems, Models, Plants (botany), Risk assessment, Room and pillar mining, Uncertainty analysis, Additional knowledge, Degradation kinetics, Emerging contaminant, Greenhouse experiments, Leaf concentrations, Uptake and accumulations, Biodegradation",

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AU - Hurtado, Carlos

AU - Trapp, Stefan

AU - Bayona, Josep M.

PY - 2016

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N2 - Understanding the processes involved in the uptake and accumulation of organic contaminants into plants is very important to assess the possible human risk associated with. Biodegradation of emerging contaminants in plants has been observed, but kinetical studies are rare. In this study, we analyse experimental data on the uptake of emerging organic contaminants into lettuce derived in a greenhouse experiment. Measured soil, root and leaf concentrations from four contaminants were selected within the applicability domain of a steady-state two-compartment standard plant uptake model: bisphenol A (BPA), carbamazepine (CBZ), triclosan (TCS) and caffeine (CAF). The model overestimated concentrations in most cases, when no degradation rates in plants were entered. Subsequently, biodegradation rates were fitted so that the measured concentrations were met.Obtained degradation kinetics are in the order, BPA <CAF ≈ TCS <CBZ in roots, and BPA ≈ TCS <CBZ

AB - Understanding the processes involved in the uptake and accumulation of organic contaminants into plants is very important to assess the possible human risk associated with. Biodegradation of emerging contaminants in plants has been observed, but kinetical studies are rare. In this study, we analyse experimental data on the uptake of emerging organic contaminants into lettuce derived in a greenhouse experiment. Measured soil, root and leaf concentrations from four contaminants were selected within the applicability domain of a steady-state two-compartment standard plant uptake model: bisphenol A (BPA), carbamazepine (CBZ), triclosan (TCS) and caffeine (CAF). The model overestimated concentrations in most cases, when no degradation rates in plants were entered. Subsequently, biodegradation rates were fitted so that the measured concentrations were met.Obtained degradation kinetics are in the order, BPA <CAF ≈ TCS <CBZ in roots, and BPA ≈ TCS <CBZ

KW - Environmental Chemistry

KW - Chemistry (all)

KW - Dissipation

KW - Emerging organic contaminants

KW - Kinetics

KW - Model

KW - Plants

KW - Contamination

KW - Degradation

KW - Energy dissipation

KW - Enzyme kinetics

KW - Inverse problems

KW - Models

KW - Plants (botany)

KW - Risk assessment

KW - Room and pillar mining

KW - Uncertainty analysis

KW - Additional knowledge

KW - Degradation kinetics

KW - Emerging contaminant

KW - Greenhouse experiments

KW - Leaf concentrations

KW - Uptake and accumulations

KW - Biodegradation

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DO - 10.1016/j.chemosphere.2016.04.134

M3 - Journal article

C2 - 27179241

SN - 0045-6535

VL - 156

SP - 236

EP - 244

JO - Chemosphere

JF - Chemosphere

ER -

Inverse modeling of the biodegradation of emerging organic contaminants in the soil-plant system

Abstract

Keywords

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