PMID- 22748217
OWN - NLM
STAT- MEDLINE
DCOM- 20121128
LR  - 20151119
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 89
IP  - 4
DP  - 2012 Oct
TI  - A numerical study on the seasonal variability of polychlorinated biphenyls from 
      the atmosphere in the East China Sea.
PG  - 389-97
LID - 10.1016/j.chemosphere.2012.05.049 [doi]
AB  - A three-dimensional/high-resolution transport model for persistent organic 
      pollutants (POPs) has been developed for the East China Sea (ECS). The POPs model 
      has four compartments (gaseous, dissolved, phytoplankton-bound, and 
      detritus-bound phases) and includes processes for diffusive air-water exchange, 
      phytoplankton uptake/depuration to POPs, decomposition of dissolved phase, 
      vertical sinking of phytoplankton, detritus production by phytoplankton 
      mortality, and vertical sinking and decomposition of detritus. The POPs model is 
      coupled with an ocean circulation model that can reproduce the seasonal variation 
      in physical variables to represent the advection and diffusion of POPs. We 
      applied the POPs model to the polychlorinated biphenyl congener 153 (PCB 153) 
      from the atmosphere and examined the behavior of PCB 153 in the ocean. The model 
      showed a remarkable seasonal variability of PCB 153. Concentrations in the 
      dissolved and particulate phases are high in winter (January-March) and low in 
      summer (July-September). In coastal regions, where chlorophyll a concentration is 
      high, horizontal and vertical distributions in the dissolved and particulate PCB 
      153 concentrations are strongly affected by phytoplankton uptake. The sensitivity 
      experiments on the dynamics of PCB 153 suggested that a change of Henry's law 
      constant associated with water temperature is the major factor controlling the 
      seasonal variability of PCB 153. The model-based yearly mass balance of PCB 153 
      in the ECS indicated that most of the atmospheric input (35.5 kg year(-1)) is 
      removed by the horizontal advection outside the ECS (19.0 kg year(-1)) and 
      accumulates to the sea bottom by vertical sinking (15.7 kg year(-1)). For 
      comparison with PCB 153, we also conducted simulations for PCB 52, 101, and 180. 
      The seasonal variations are similar to that of PCB 153. The mass balance of PCB 
      52 that has short half-life time and less hydrophobic property shows the 
      different results compared with PCB 101, 153, and 180.
CI  - Copyright (c) 2012 Elsevier Ltd. All rights reserved.
FAU - Ono, Jun
AU  - Ono J
AD  - Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan. 
      jo@1.k.u-tokyo.ac.jp
FAU - Takahashi, Daisuke
AU  - Takahashi D
FAU - Guo, Xinyu
AU  - Guo X
FAU - Takahashi, Shin
AU  - Takahashi S
FAU - Takeoka, Hidetaka
AU  - Takeoka H
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120628
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Air Pollutants)
RN  - 0 (Water Pollutants, Chemical)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
RN  - ZRU0C9E32O (2,4,5,2',4',5'-hexachlorobiphenyl)
SB  - IM
MH  - Air Pollutants/*chemistry
MH  - Environmental Monitoring
MH  - Models, Biological
MH  - Models, Theoretical
MH  - Oceans and Seas
MH  - Pacific Ocean
MH  - Polychlorinated Biphenyls/*chemistry
MH  - Seasons
MH  - Water Pollutants, Chemical/*chemistry
EDAT- 2012/07/04 06:00
MHDA- 2012/12/10 06:00
CRDT- 2012/07/04 06:00
PHST- 2011/11/21 00:00 [received]
PHST- 2012/04/14 00:00 [revised]
PHST- 2012/05/19 00:00 [accepted]
PHST- 2012/07/04 06:00 [entrez]
PHST- 2012/07/04 06:00 [pubmed]
PHST- 2012/12/10 06:00 [medline]
AID - S0045-6535(12)00670-4 [pii]
AID - 10.1016/j.chemosphere.2012.05.049 [doi]
PST - ppublish
SO  - Chemosphere. 2012 Oct;89(4):389-97. doi: 10.1016/j.chemosphere.2012.05.049. Epub 
      2012 Jun 28.