TY - JOUR
T1 - Modelling bioaccumulation of semi-volatile organic compounds (SOCs) from air in plants based on allometric principles
AU - Steyaert, Nils L.L.
AU - Hauck, Mara
AU - Van Hulle, Stijn W.H.
AU - Jan Hendriks, A.
PY - 2009/10
Y1 - 2009/10
N2 - A model was developed for gaseous plant-air exchange of semi-volatile organic compounds. Based on previous soil-plant modelling, uptake and elimination kinetics were scaled as a function of plant mass and octanol-air partition ratios. Exchange of chemicals was assumed to be limited by resistances encountered during diffusion through a laminar boundary layer of air and permeation through the cuticle of the leaf. The uptake rate constant increased and the elimination rate constant decreased with the octanol-air partition ratio both apparently levelling off at high values. Differences in kinetics between species could be explained by their masses. Validation on independent data showed that bio-concentration factors of PCBs, chlorobenzenes and other chemicals were predicted well by the model. For pesticides, polycyclic aromatic hydrocarbons and dioxins deviations occurred.
AB - A model was developed for gaseous plant-air exchange of semi-volatile organic compounds. Based on previous soil-plant modelling, uptake and elimination kinetics were scaled as a function of plant mass and octanol-air partition ratios. Exchange of chemicals was assumed to be limited by resistances encountered during diffusion through a laminar boundary layer of air and permeation through the cuticle of the leaf. The uptake rate constant increased and the elimination rate constant decreased with the octanol-air partition ratio both apparently levelling off at high values. Differences in kinetics between species could be explained by their masses. Validation on independent data showed that bio-concentration factors of PCBs, chlorobenzenes and other chemicals were predicted well by the model. For pesticides, polycyclic aromatic hydrocarbons and dioxins deviations occurred.
KW - Atmospheric deposition
KW - Body mass
KW - Kinetics
KW - Persistent organic pollutants
UR - http://www.scopus.com/inward/record.url?scp=70350549880&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2009.08.032
DO - 10.1016/j.chemosphere.2009.08.032
M3 - Article
C2 - 19766288
AN - SCOPUS:70350549880
SN - 0045-6535
VL - 77
SP - 727
EP - 732
JO - Chemosphere
JF - Chemosphere
IS - 6
ER -
