Field derived accumulation and release kinetics of DDTs in plants.

Di Guardo, Antonio and Nizzetto, Luca and Infantino, Alfonso and Colombo, Ilaria and Saporiti, Elena and Jones, Kevin C. (2008) Field derived accumulation and release kinetics of DDTs in plants. Chemosphere, 72 (10). pp. 1497-1503. ISSN 0045-6535

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Abstract

Vegetation plays an important role in influencing the air/surface exchange of semivolatile organic compounds (SOCs). In order to predict the capability of different plant species to capture chemicals from the air, plant–air partition coefficients and kinetic accumulation parameters must be defined. In this study, potted plants of three different species were transferred to the vicinity of a source point for DDT, namely a contaminated area around a former production plant in Italy. Leaves were constantly sampled in order to follow the uptake from air over time. Later, the potted plants were transported to a location characterized by background diffuse air concentrations for the release phase. Coupling the experimental results with a two-compartment accumulation model it was possible to derive the kinetics parameters and the plant–air partition coefficient KPA for p,p′-DDT. The log KPA (on a mass/volume basis) ranged between 1.7 and 2.2 for the different species. The uncertainties related to the different phenomena involved in a field uptake/release experiment are discussed.

Item Type:
Journal Article
Journal or Publication Title:
Chemosphere
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2304
Subjects:
?? persistent organic pollutantsmass transfer coefficientbioaccumulation factorvegetationoakcherry laurelazaleaenvironmental chemistrygeneral chemistrychemistry(all)ge environmental sciences ??
ID Code:
28153
Deposited By:
Deposited On:
12 Nov 2009 14:24
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Jul 2024 08:30