Calculation of bioconcentration factors of persistent hydrophobic compounds in the air vegetation system英文电子书.pdfVIP

Chemosphere,Vol.29, No. 4, pp. 623-640, 1994 Copyright© 1994ElsevierScienceLtd Pergamon Printedin ~ t Britain.All rightsreserved 0045-6535(94)00205-3 0045-6535/94$7.00+0.00 C A L C U L A T I O N O F B I O C O N C E N T R A T I O N F A C T O R S O F P E R S I S T E N T H Y D R O P H O B I C C O M P O U N D S I N T H E A I R N E G E T A T I O N S Y S T E M Jochen F. MOiler, Darryl W. Hawker and Des W. Connell Faculty of Environmental Sciences, Griffith University, Q 4111 Australia (Receivedin Germany15March 1994;accepted24 June 1994) Abstract A multi-compartment model based on equilibrium partitioning has been developed for predicting leaf/atmosphere partition coefficients (theoretical KBA) of persistent hydrophobic organic compounds. The leaf was considered to consist of five major phases i.e. cuticular iipids, cellular lipids, protein, structural carbohydrate and water, with chemicals partitioned between these compartments and the vapour phase in the ambient atmosphere. The input data required for the model were the l-octanoVwater partition coefficient (Kow) and Henrfs Law constant (H) of the compound, together with the volume fractions of the individual phases in the lea£ The model was evaluated using laboratory-based experimental