PMID- 12371486
OWN - NLM
STAT- MEDLINE
DCOM- 20030312
LR  - 20161124
IS  - 0730-7268 (Print)
IS  - 0730-7268 (Linking)
VI  - 21
IP  - 10
DP  - 2002 Oct
TI  - Prediction of uptake dynamics of persistent organic pollutants by bacteria and 
      phytoplankton.
PG  - 2099-107
AB  - Phytoplankton and bacteria play an important role on the biogeochemical cycles of 
      persistent organic pollutants (POPs). However, experimental data and quantitative 
      knowledge of the kinetics of uptake and depuration of most POPs by bacteria and 
      phytoplankton are scarce. In the present paper, a procedure to predict the 
      sorption kinetics to bacteria and phytoplankton is developed. The prediction 
      method is the combination of a mechanistic model for sorption and quantitative 
      structure-activity relationships relating bioconcentration factors and membrane 
      permeability to the chemical physical-chemical properties. The model consists of 
      two compartments where the first compartment is the cellular surface and the 
      second compartment is the cell biomass or matrix. Equations for estimating uptake 
      and depuration rate constants into the matrix and adsorption and desorption rate 
      constants onto the surface are obtained. These expressions depend on the 
      physical-chemical properties of the chemical, the environmental temperature, the 
      microorganism size, and species-specific quality of organic matter. While 
      microorganism shape has a secondary influence on uptake dynamics, microorganism 
      size and chemical hydrophobicity arise as the key factors controlling the 
      kinetics of POP incorporation into bacteria and plankton. Uptake, depuration, 
      adsorption, and desorption rate constants are reported for POPs such as 
      polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), 
      polychlorinated dioxins and furans (PCDD/Fs), and POPs of emerging concern, such 
      as polybrominated diphenyl ethers (PBDEs). Finally, implications of uptake and 
      depuration dynamics on the biogeochemical cycling of POPs are discussed.
FAU - Del Vento, Sabino
AU  - Del Vento S
AD  - Department of Environmental Chemistry, IIQAB-CSIC, Barcelona, Catalunya, Spain.
FAU - Dachs, Jordi
AU  - Dachs J
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Toxicol Chem
JT  - Environmental toxicology and chemistry
JID - 8308958
RN  - 0 (Polycyclic Aromatic Hydrocarbons)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Adsorption
MH  - Bacteria/*growth & development
MH  - Biodegradation, Environmental
MH  - Forecasting
MH  - *Models, Biological
MH  - Phytoplankton/*growth & development
MH  - Polycyclic Aromatic Hydrocarbons/pharmacokinetics
MH  - Temperature
MH  - Water Pollutants, Chemical/*pharmacokinetics
EDAT- 2002/10/10 04:00
MHDA- 2003/03/13 04:00
CRDT- 2002/10/10 04:00
PHST- 2002/10/10 04:00 [pubmed]
PHST- 2003/03/13 04:00 [medline]
PHST- 2002/10/10 04:00 [entrez]
PST - ppublish
SO  - Environ Toxicol Chem. 2002 Oct;21(10):2099-107.