1. General Model Information

Name: CemoS/Plant - chemical uptake in plants


Main medium: terrestial
Main subject: (eco)toxicology, biogeochemistry
Organization level: Organisms
Type of model: compartment model
Main application:
Keywords: plant volatilization, contamination, exposure


Prof. Michael Matthies
University of Osnabrueck
Institute of Environmental Systems Research
Artilleriestr 34
49069 Osnabrueck, Germany
Phone: +49-541-9692574
Fax : +49-541-969-2599
email: matthies@ramses.usf.Uni-Osnabrueck.DE


Guido Baumgartner
Bernhard Reiter
Sven Scheil
Stefan Schwartz
Jan-Oliver Wagner
Dr. Stefan Trapp
Prof. Michael Matthies Email:cemos@skylla.mathematik.uni-osnabrueck.de


contents of the model
The model is part of the model package CemoS, a program system for exposure concentration estimates of environmentally hazardous chemicals. CemoS/Plant calculates uptake of anthropogenic organic chemicals from soil and air into the above-ground part of plants as well as chemical losses from plant by volatilization and metabolism in a given time. Moreover, dry and wet deposition of chemicals, adsorbed to particles (e.g. aerosols), from air onto plant surfaces is estimated and particle concentration on the plant is calculated. The model is developed for a laboratory test system with constant conditions like air temperature, air humidity, chemical concentration in soil and transpiration rate. Development of plant mass is neufis/glected.
principles of the model
The concentration of a chemical in the plant as well as the concentration in the particles on the plant is governed by a first-order linear differential equation with constant coefficients. An analytical solution is implemented. Chemical distribution in soil, and between plant and atmosphere is calculated by help of partition coefficients. Volatilization from plantinto air, and chemical input from air into plant are governed by the conductivity of the leaves and the boundary air layer. Metabolism is taken into consideration by using a first-order degradation rate.

Author of Abstract: UFIS - Environmental Research Information System

II. Technical Information

II.1 Executables:

Operating System(s): MS-DOS Type of computer: PC RAM required: about 150K Disc space: 1MB List of files: CEMOS.EXE executeable program CEMOS.OVR STDSUB.DAB substance data EGAVGA.BGI graphic file CEMOS.HLP help file CEMOS.RES string file

II.2 Source-code:

Programming Language(s): Borland Pascal 7.0

II.3 Manuals:

Manual: Trapp, St. ; Matthies, M.: Dynamik von Schadstoffen - Umweltmodellierung mit Cemos, Springer, Berlin (1996). ISBN 3-540-59312-8. Complete model documentation: Trapp, St. ; Matthies, M.: Dynamik von Schadstoffen - Umweltmodellierung mit Cemos, Springer, Berlin (1996). ISBN 3-540-59312-8.

II.4 Data:

III. Mathematical Information

III.1 Mathematics

This is a list of model equations sorted by their characteristics with hypertext links for more details.

III.2 Quantities

This is a list of model quantities sorted by their characteristics with hypertext links for more details.

III.2.1 Input

III.2.2 Output

IV. References

Briggs, G.G., Bromilow, R.H., Evans, A.A., 1982.Relationships Between Lipophilicity and Root Uptake and Translocation of Non-ionisedChemicals by Barley.
Pestic. Sci. 13, 495-504.

Briggs, G.G., Bromilow, R.H., Evans, A.A., Williams, M., 1983. Relationships Between Lipophilicity and the Distribution of Non-ionised Chemicals in Barley Shoots Following Uptake by the Roots. Pestic. Sci. 14: 492-500.

Junge, C.E., 1977. Basic Considerations About Trace Constituents in the Atmosphere as related to the Fate of GlobalPollutants. In: Fate of Pollutants in the Air and W, Suffet, I.H. (editors), Wiley, New York 1977, pp. 7-26.

Karickhoff, S.W. 1981. Semi-Empirical Estimation of Sorption of Hydrophobic Pollutants on Natural Sediments and Soils. Chemosphere 10, Pergamon, Oxford, UK. pp. 833-846.

Riederer, M., 1990. Estimating Partitioning and Transport of Organic Chemicals in the Foliage/Atmosphere System: Discussion of a Fugacity-based model. Environ. Sci. Technol. 24: 829-837.

Schonherr, J., Riederer, M., 1989. Foliar Penetration and Accumulation of Organic Chemicals in Plant Cuticles. Springer-Verlag, New York. pp. 1-70.

Thompson, N., 1983. Diffusion and Uptake of Chemical Vapour Volatilising from a Sprayed Target Area. Pestic. Sci. 14: 33-39.

Trapp, S.; McFarlane, C.; Matthies, M. 1994. Model for Uptake of Xenobiotics into Plants: Validation with Bromacil Experiments. Environmental Toxicology and Chemistry 13, 3: 413-422.

Projektgruppe Exposmod. 1995. CemoS Handbuch.(in german)

Trapp S., Matthies M., (1996): Dynamik von Schadstoffen - Umweltmodellierung mit CemoS.
Springer Verlag. ISBN 3-540-59-312-8.

Trapp, S., Pussemier, L., 1991. Model calculations and measurements of uptake and translocation of carbamates by bean plants
Chemosphere 22, 327-339.

V. Further information in the World-Wide-Web

VI. Additional remarks

Additional information
Last review of this document by: R.Patzak : 1.October 1997 -
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:40 CEST 2002

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