ESTIMATION OF THE SOIL–WATER PARTITION COEFFICIENT NORMALIZED TO ORGANIC CARBON FOR IONIZABLE ORGANIC CHEMICALS

2008 ◽  
Vol 27 (10) ◽  
pp. 1995 ◽  
Author(s):  
Antonio Franco ◽  
Stefan Trapp
Keyword(s):  
Organic Carbon ◽  
Partition Coefficient ◽  
Soil Water ◽  
Organic Chemicals ◽  
Water Partition Coefficient

Partitioning of Lindane between sediment, water and the Crustacean Metapenaeus macleayi

1990 ◽  
Vol 41 (3) ◽  
pp. 389 ◽  
Author(s):  
AC Just ◽  
DW Hawker ◽  
DW Connell
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Partition Coefficient ◽  
Rate Constants ◽  
Laboratory Experiments ◽  
Bioconcentration Factor ◽  
Relevant Literature ◽  
Bioaccumulation Factor ◽  
Sorption Site ◽  
Water Partition Coefficient

The partitioning behaviour of lindane between sediment, water and the prawn Metapenaeus macleayi was investigated. The sediment-to-water partition coefficient was determined with sealed glass vials in laboratory experiments and found to be 9.52, or 2164 on an organic carbon basis. This is in agreement with relevant literature data and confirms that the organic matter of the sediment is the primary sorption site in this process. The bioconcentration factor was evaluated from laboratory experiments with prawns in sealed glass jars in which the lindane seawater solution was changed frequently. Under these conditions, effective equilibrium was attained after 24 h. Measured uptake (k1) and clearance (k2) rate constants were smaller than predicted on the basis of existing general relationships between k1, k2 and the octanol/water partition coefficient (Kow) for crustaceans. The bioconcentration factor (KB) was found to be 5.50, or 1273 on a lipid basis, which is also smaller than values estimated from general relationships. The sediment-to-prawn bioaccumulation factor was 0.58, which means that biotic concentrations will be significantly less than those observed in sediments.

Chromatographic methods in determination of the soil–water partition coefficient

2016 ◽  
Vol 39 (5-6) ◽  
pp. 249-256 ◽  
Author(s):  
Filip Andrić ◽  
Sandra Šegan ◽  
Živoslav Tešić ◽  
Dušanka Milojković-Opsenica
Keyword(s):  
Partition Coefficient ◽  
Soil Water ◽  
Chromatographic Methods ◽  
Water Partition Coefficient
Sign in / Sign up

Export Citation Format

Share Document