You are here:
MATHEMATICAL MODEL OF PLANT UPTAKE AND TRANSLOCATION OF ORGANIC CHEMICALS: DEVELOPMENT OF THE MODEL
Citation:
Lindstrom, F., L. Boersma, AND C. McFarlane. MATHEMATICAL MODEL OF PLANT UPTAKE AND TRANSLOCATION OF ORGANIC CHEMICALS: DEVELOPMENT OF THE MODEL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-92/346 (NTIS PB93106938), 1991.
Description:
Uptake, transport, and accumulation of organic chemicals by plants are influenced by characteristics of the plant and properties of the chemical, soil, and environmental conditions. valuations of plant contamination cannot be made experimentally for the many thousands of xenobiotic chemicals. athematical model was formulated which, when adequately tested, can be used to provide information about potential contamination. he model consists of one root compartment, one stem compartment, and three leaf compartments - each compartment subdivided into xylem, phloem, and storage. hemical uptake is modeled from the soil solution to the root surface, through the apparent free space, endodermis into the xylem and throught the plant. alues for the anatomical dimensions of the compartments for physical and chemical coefficients were chosen from the literature. his article shows formulations of the mass balance equations, which lead to the complete system of equations that describe uptake. he solution gives chemical mass in each compartment as a function of time. he mathematical development yielded a well-defined concept of uptake, in-plant transport, and local accumulation of organic chemicals by plants.