PMID- 15093120
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20040505
LR  - 20190901
IS  - 0269-7491 (Print)
IS  - 0269-7491 (Linking)
VI  - 100
IP  - 1-3
DP  - 1999
TI  - The evolution of mass balance models of persistent organic pollutant fate in the 
      environment.
PG  - 223-40
AB  - Current approaches to modelling the fate of persistent organic pollutants (POPs) 
      in the environment have evolved in response to four dominant characteristics of 
      these substances; namely: (1) the presence of POPs in virtually all environmental 
      phases and the ease with which they move from one to the other requires 
      multi-compartmental modelling. Describing transport across phase boundaries 
      becomes as, or even more, important as quantifying transport within the phases; 
      (2) POPs may persist in the environment for many decades. For chemicals that 
      'have time', concepts such as equilibrium partitioning and steady-state become 
      more important than for short-lived substances whose fate is more controlled by 
      the rates of transformation; (3) measuring POPs is difficult and expensive and 
      observed concentrations of POPs are not available in high spatial or temporal 
      resolution. Consequently, high resolution tends not to be a high priority in POP 
      models; and (4) detrimental effects of POPs often manifest themselves in top 
      predators, which has led to a focus on modelling biotic uptake and transfer 
      within food chains. The task of building a POPs model is viewed as combining the 
      four 'building blocks' of partitioning, transport, transformation and source data 
      with the help of the law of the conservation of mass. Process models, evaluative 
      models, models of real local, regional and global fate, as well as biological 
      uptake models are presented and references to numerous examples are provided. An 
      attempt is made to forecast future directions in the field of POPs modelling. It 
      is expected that modelling techniques that do not rely on quantitative emission 
      estimates as well as approaches that take into account spatial, temporal and 
      climatic variability as well as parameter uncertainty will increase in 
      importance. Finally, the relationship between modelling POPs and models of other 
      pollutant issues is addressed, as are potential interactions between POPs and 
      pollutant issues such as eutrophication, acidification and global climate change.
FAU - Wania, F
AU  - Wania F
AD  - WECC Wania Environmental Chemists Corp., 280 Simcoe Street, Suite 404, Toronto, 
      Ontario, Canada M5T 2Y5. frank.wania@utoronto.ca
FAU - Mackay, D
AU  - Mackay D
LA  - eng
PT  - Journal Article
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
EDAT- 2004/04/20 05:00
MHDA- 2004/04/20 05:01
CRDT- 2004/04/20 05:00
PHST- 1998/11/15 00:00 [received]
PHST- 1999/03/22 00:00 [accepted]
PHST- 2004/04/20 05:00 [pubmed]
PHST- 2004/04/20 05:01 [medline]
PHST- 2004/04/20 05:00 [entrez]
AID - S0269749199000937 [pii]
AID - 10.1016/s0269-7491(99)00093-7 [doi]
PST - ppublish
SO  - Environ Pollut. 1999;100(1-3):223-40. doi: 10.1016/s0269-7491(99)00093-7.