PMID- 17223174
OWN - NLM
STAT- MEDLINE
DCOM- 20070627
LR  - 20181201
IS  - 0045-6535 (Print)
IS  - 0045-6535 (Linking)
VI  - 67
IP  - 9
DP  - 2007 Apr
TI  - Pollution sources and occurrences of selected persistent organic pollutants 
      (POPs) in sediments of the Mekong River delta, South Vietnam.
PG  - 1794-801
AB  - The Mekong River delta is one of the largest agricultural land in the Southeast 
      Asia. It plays a very important role for agriculture and fisheries in South 
      Vietnam. However, comprehensive studies on the environmental pollution of 
      persistent organic pollutants (POPs) in Mekong River delta have not been carried 
      out in recent years. In this study, we collected sediment samples from the Mekong 
      River to evaluate the contamination and ecological risks caused by several POPs. 
      The contamination pattern of POPs was DDT>PCBs>CHLs>HCHs>HCB. DDTs are the most 
      abundant pollutants, their concentration ranging from 0.01 to 110 ng/g dry wt, 
      followed by PCBs (0.039-9.2 ng/g dry wt). DDTs and PCBs concentrations were 
      higher in sediment from adjacent to urban areas than those from rural and 
      agricultural sites, suggesting urban areas as important point sources of DDTs and 
      PCBs to the river. Ratio of p,p'-DDT/p,p'-DDE was lower compared to those 
      previously reported. However, some samples still had the ratio higher than 0.5, 
      indicating recent input of DDT into the aquatic environments. This result shows 
      that although the magnitude of contamination decreased over time, recent inputs 
      of DDTs to the river still occur. Some sediment samples had concentrations of DDT 
      compounds higher than the standards from the Canadian Environmental Quality 
      Guideline, suggesting continuous monitoring for POPs contamination in the Mekong 
      River is necessary.
FAU - Minh, Nguyen Hung
AU  - Minh NH
AD  - Center for Marine Environmental Studies, Ehime University, Matsuyama 790-8577, 
      Japan.
FAU - Minh, Tu Binh
AU  - Minh TB
FAU - Kajiwara, Natsuko
AU  - Kajiwara N
FAU - Kunisue, Tatsuya
AU  - Kunisue T
FAU - Iwata, Hisato
AU  - Iwata H
FAU - Viet, Pham Hung
AU  - Viet PH
FAU - Cam Tu, Nguyen Phuc
AU  - Cam Tu NP
FAU - Tuyen, Bui Cach
AU  - Tuyen BC
FAU - Tanabe, Shinsuke
AU  - Tanabe S
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20070116
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Environmental Pollutants)
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - CIW5S16655 (DDT)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Cities
MH  - DDT/analysis/toxicity
MH  - Ecology
MH  - *Environmental Monitoring
MH  - Environmental Pollutants/*analysis/toxicity
MH  - Geography
MH  - Geologic Sediments/*analysis/chemistry
MH  - Hydrocarbons, Chlorinated/*analysis/toxicity
MH  - Industry
MH  - Polychlorinated Biphenyls/analysis/toxicity
MH  - Public Health
MH  - Risk Assessment
MH  - Rivers
MH  - Time Factors
MH  - Vietnam
EDAT- 2007/01/16 09:00
MHDA- 2007/06/28 09:00
CRDT- 2007/01/16 09:00
PHST- 2006/05/26 00:00 [accepted]
PHST- 2007/01/16 09:00 [pubmed]
PHST- 2007/06/28 09:00 [medline]
PHST- 2007/01/16 09:00 [entrez]
AID - S0045-6535(06)01576-1 [pii]
AID - 10.1016/j.chemosphere.2006.05.144 [doi]
PST - ppublish
SO  - Chemosphere. 2007 Apr;67(9):1794-801. doi: 10.1016/j.chemosphere.2006.05.144. 
      Epub 2007 Jan 16.