PMID- 24982022
OWN - NLM
STAT- MEDLINE
DCOM- 20150603
LR  - 20140722
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 493
DP  - 2014 Sep 15
TI  - Evaluating the temporal variability of concentrations of POPs in a glacier-fed 
      stream food chain using a combined modeling approach.
PG  - 571-9
LID - S0048-9697(14)00852-3 [pii]
LID - 10.1016/j.scitotenv.2014.05.150 [doi]
AB  - Falling snow acts as an efficient scavenger of contaminants from the atmosphere 
      and, accumulating on the ground surface, behaves as a temporary storage 
      reservoir; during snow aging and metamorphosis, contaminants may concentrate and 
      be subject to pulsed release during intense snow melt events. In high-mountain 
      areas, firn and ice play a similar role. The consequent concentration peaks in 
      surface waters can pose a risk to high-altitude ecosystems, since snow and ice 
      melt often coincide with periods of intense biological activity. In such 
      situations, the role of dynamic models can be crucial when assessing 
      environmental behavior of contaminants and their accumulation patterns in aquatic 
      organisms. In the present work, a dynamic fate modeling approach was combined to 
      a hydrological module capable of estimating water discharge and snow/ice melt 
      contributions on an hourly basis, starting from hourly air temperatures. The 
      model was applied to the case study of the Frodolfo glacier-fed stream (Italian 
      Alps), for which concentrations of a number of persistent organic pollutants 
      (POPs), such as polychlorinated biphenyl (PCBs) and 
      p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) in stream water and four 
      macroinvertebrate groups were available. Considering the uncertainties in input 
      data, results showed a satisfying agreement for both water and organism 
      concentrations. This study showed the model adequacy for the estimation of 
      pollutant concentrations in surface waters and bioaccumulation in aquatic 
      organisms, as well as its possible role in assessing the consequences of climate 
      change on the cycle of POPs.
CI  - Copyright (c) 2014 Elsevier B.V. All rights reserved.
FAU - Morselli, Melissa
AU  - Morselli M
AD  - Department of Science and High Technology, University of Insubria, Via Valleggio 
      11, 22100 Como CO, Italy.
FAU - Semplice, Matteo
AU  - Semplice M
AD  - Dipartimento di Matematica, Universita degli Studi di Torino, Via C. Alberto 10, 
      10123 Torino TO, Italy.
FAU - Villa, Sara
AU  - Villa S
AD  - Department of Earth and Environmental Sciences, University of Milano-Bicocca, 
      Piazza della Scienza 1, 20126 Milano MI, Italy.
FAU - Di Guardo, Antonio
AU  - Di Guardo A
AD  - Department of Science and High Technology, University of Insubria, Via Valleggio 
      11, 22100 Como CO, Italy.
LA  - eng
PT  - Journal Article
DEP - 20140627
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - 0 (Pesticides)
RN  - 0 (Water Pollutants, Chemical)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - *Environmental Monitoring
MH  - *Food Chain
MH  - Ice Cover/chemistry
MH  - *Models, Chemical
MH  - Pesticides/analysis
MH  - Polychlorinated Biphenyls/analysis
MH  - Rivers/chemistry
MH  - Water Pollutants, Chemical/*analysis
MH  - Water Pollution, Chemical/*statistics & numerical data
OTO - NOTNLM
OT  - DDE
OT  - EcoDyna model
OT  - Exposure
OT  - Macroinvertebrates
OT  - PCBs
OT  - Snow
EDAT- 2014/07/02 06:00
MHDA- 2015/06/04 06:00
CRDT- 2014/07/02 06:00
PHST- 2014/04/06 00:00 [received]
PHST- 2014/05/28 00:00 [revised]
PHST- 2014/05/28 00:00 [accepted]
PHST- 2014/07/02 06:00 [entrez]
PHST- 2014/07/02 06:00 [pubmed]
PHST- 2015/06/04 06:00 [medline]
AID - S0048-9697(14)00852-3 [pii]
AID - 10.1016/j.scitotenv.2014.05.150 [doi]
PST - ppublish
SO  - Sci Total Environ. 2014 Sep 15;493:571-9. doi: 10.1016/j.scitotenv.2014.05.150. 
      Epub 2014 Jun 27.