PMID- 21724235
OWN - NLM
STAT- MEDLINE
DCOM- 20120615
LR  - 20131121
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 85
IP  - 2
DP  - 2011 Sep
TI  - Persistent organic pollutants associated to water fluxes and sedimentary 
      processes in the Colorado River delta, Baja California, Mexico.
PG  - 210-7
LID - 10.1016/j.chemosphere.2011.06.030 [doi]
AB  - Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) were 
      studied in sediment cores from two distinctive modern channels of the Colorado 
      River (CR) delta. Their abundance and temporal changes are associated with 
      flood-flows from the CR across the USA-Mexico border. The CR channel is directly 
      exposed to river flood-flows while the Hardy River (HR) is a local channel 
      derived mainly from agricultural runoff, geothermal effluents, and treated urban 
      wastewater. Different headwater compositions and degrees of exposure to 
      flood-flows appear to be the factors controlling the composition of persistent 
      organic pollutants (POPs). Enrichment of OCPs (46 ng g(-1) dwt in HR and 4.37 ng 
      g(-1) dwt in CR) occurred during or a few years after flooding. PCB-138 (4.2 ng 
      g(-1)dwt) is enriched in HR suggesting its origin in dielectric oils from the 
      geothermal power plant. PCB-28 (2.1 ng g(-1)dwt) in CR may be related with 
      atmospheric input and/or re-deposition of upstream sediments. In surficial 
      sediments (0-3 cm), only HR exceeds international sediment quality guidelines 
      (4,4'-DDE=8.16 ng g(-1)dwt and SigmaDDT=8.34 ng g(-1)dwt).
CI  - Copyright (c) 2011 Elsevier Ltd. All rights reserved.
FAU - Lugo-Ibarra, K C
AU  - Lugo-Ibarra KC
AD  - Facultad de Ciencias Marinas, Universidad Autonoma de Baja California UABC, Km 
      107 Carretera Tijuana-Ensenada, CP 22860, Ensenada, Baja California, Mexico.
FAU - Daessle, L W
AU  - Daessle LW
FAU - Macias-Zamora, J V
AU  - Macias-Zamora JV
FAU - Ramirez-Alvarez, N
AU  - Ramirez-Alvarez N
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20110702
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Pesticides)
RN  - 0 (Water Pollutants, Chemical)
RN  - 12789-03-6 (Chlordan)
RN  - 4M7FS82U08 (Dichlorodiphenyl Dichloroethylene)
RN  - CIW5S16655 (DDT)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
RN  - OKA6A6ZD4K (Endosulfan)
SB  - IM
MH  - Chlordan/analysis
MH  - DDT/analysis
MH  - Dichlorodiphenyl Dichloroethylene/analysis
MH  - Endosulfan/analysis
MH  - Fresh Water/chemistry
MH  - Geologic Sediments/*chemistry
MH  - Hydrocarbons, Chlorinated/analysis
MH  - Mexico
MH  - Pesticides/*analysis
MH  - Polychlorinated Biphenyls/*analysis
MH  - Rivers
MH  - United States
MH  - Water Movements
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2011/07/05 06:00
MHDA- 2012/06/16 06:00
CRDT- 2011/07/05 06:00
PHST- 2011/01/03 00:00 [received]
PHST- 2011/04/12 00:00 [revised]
PHST- 2011/06/01 00:00 [accepted]
PHST- 2011/07/05 06:00 [entrez]
PHST- 2011/07/05 06:00 [pubmed]
PHST- 2012/06/16 06:00 [medline]
AID - S0045-6535(11)00673-4 [pii]
AID - 10.1016/j.chemosphere.2011.06.030 [doi]
PST - ppublish
SO  - Chemosphere. 2011 Sep;85(2):210-7. doi: 10.1016/j.chemosphere.2011.06.030. Epub 
      2011 Jul 2.