PMID- 23062073
OWN - NLM
STAT- MEDLINE
DCOM- 20130418
LR  - 20131121
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 46
IP  - 21
DP  - 2012 Nov 6
TI  - Passive sampling to measure baseline dissolved persistent organic pollutant 
      concentrations in the water column of the Palos Verdes Shelf Superfund site.
PG  - 11937-47
LID - 10.1021/es302139y [doi]
AB  - Passive sampling was used to deduce water concentrations of persistent organic 
      pollutants (POPs) in the vicinity of a marine Superfund site on the Palos Verdes 
      Shelf, California, USA. Precalibrated solid phase microextraction (SPME) fibers 
      and polyethylene (PE) strips that were preloaded with performance reference 
      compounds (PRCs) were codeployed for 32 d along an 11-station gradient at bottom, 
      surface, and midwater depths. Retrieved samplers were analyzed for DDT congeners 
      and their breakdown products (DDE, DDD, DDMU, and DDNU) and 43 PCB congeners 
      using GC-EI- and NCI-MS. PRCs were used to calculate compound-specific fractional 
      equilibration achieved in situ for the PE samplers, using both an exponential 
      approach to equilibrium (EAE) and numerical integration of Fickian diffusion (NI) 
      models. The highest observed concentrations were for p,p'-DDE, with 2200 and 990 
      pg/L deduced from PE and SPME, respectively. The difference in these estimates 
      could be largely attributed to uncertainty in equilibrium partition coefficients, 
      unaccounted for disequilibrium between samplers and water, or different time 
      scales over which the samplers average. The concordance between PE and SPME 
      estimated concentrations for DDE was high (R(2) = 0.95). PCBs were only detected 
      in PE samplers, due to their much larger size. Near-bottom waters adjacent to and 
      down current from sediments with the highest bulk concentrations exhibited 
      aqueous concentrations of DDTs and PCBs that exceeded Ambient Water Quality 
      Criteria (AWQC) for human and aquatic health, indicating the need for future 
      monitoring to determine the effectiveness of remedial activities taken to reduce 
      adverse effects of contaminated surface sediments.
FAU - Fernandez, Loretta A
AU  - Fernandez LA
AD  - U.S. Environmental Protection Agency, Atlantic Ecology Division, Narragansett, 
      Rhode Island 02882, USA. lorettaf@alum.mit.edu
FAU - Lao, Wenjian
AU  - Lao W
FAU - Maruya, Keith A
AU  - Maruya KA
FAU - White, Carmen
AU  - White C
FAU - Burgess, Robert M
AU  - Burgess RM
LA  - eng
PT  - Journal Article
DEP - 20121026
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Hazardous Waste)
RN  - 0 (Water Pollutants, Chemical)
RN  - 4M7FS82U08 (Dichlorodiphenyl Dichloroethylene)
RN  - 9002-88-4 (Polyethylene)
RN  - CIW5S16655 (DDT)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - California
MH  - DDT/analysis
MH  - Dichlorodiphenyl Dichloroethylene/analysis
MH  - Environmental Monitoring/instrumentation/*methods
MH  - *Hazardous Waste
MH  - Polychlorinated Biphenyls/analysis
MH  - Polyethylene
MH  - Solid Phase Microextraction
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2012/10/16 06:00
MHDA- 2013/04/20 06:00
CRDT- 2012/10/16 06:00
PHST- 2012/10/16 06:00 [entrez]
PHST- 2012/10/16 06:00 [pubmed]
PHST- 2013/04/20 06:00 [medline]
AID - 10.1021/es302139y [doi]
PST - ppublish
SO  - Environ Sci Technol. 2012 Nov 6;46(21):11937-47. doi: 10.1021/es302139y. Epub 
      2012 Oct 26.