PMID- 17354037
OWN - NLM
STAT- MEDLINE
DCOM- 20070918
LR  - 20070418
IS  - 0090-4341 (Print)
IS  - 0090-4341 (Linking)
VI  - 52
IP  - 4
DP  - 2007 May
TI  - Persistent organic pollutants in sediments from Sai Gon-Dong Nai River basin, 
      Vietnam: levels and temporal trends.
PG  - 458-65
AB  - Surficial sediment samples were collected from Hochiminh City canals, the Sai 
      Gon-Dong Nai River, and its estuary, one of the most predominant industrial areas 
      in Hochiminh City, southern Vietnam, for determination of selected persistent 
      organic pollutants (POPs). Contamination pattern was as follows: PCBs > or = DDTs 
      > HCB > CHLs > HCHs. Concentrations of PCBs and DDTs ranged from 0.50-150 ng/g 
      and 0.15-72 ng/g dry wt, respectively. On the other hand, concentrations of CHLs, 
      HCHs, and HCB were mostly <2 ng/g dry wt. Levels of the all organochlorines (OCs) 
      in Hochiminh City canals were significantly higher than those in the other areas, 
      indicating the urban areas as major pollution sources to the aquatic environment. 
      The contamination pattern was PCBs > DDTs in the city canals but PCBs < DDTs in 
      the downstream and the estuary, suggesting particularly high contamination by 
      PCBs in the city. Examination of DDTs composition and their ratios demonstrated 
      continuous input of this pesticide to the city canals. However, the combination 
      of our data and those from available literature implies a decreasing trend of 
      PCBs and DDTs in the environment. DDTs concentrations have been reduced 50% after 
      approximately 5 years. Composition of CHLs in the sediment from Hochiminh City 
      canals was comparable to those of common technical mixtures, suggesting 
      continuous input of CHLs to the environment. CHLs might be in use for purposes 
      like termite control, wood preservation, and protection of underground cables. 
      Hazard assessment implies high toxic potential of DDTs for sediments from 
      Hochiminh City canals and suggests the need for better management of municipal 
      discharges.
FAU - Minh, Nguyen Hung
AU  - Minh NH
AD  - Center for Marine Environmental Studies, Ehime University, Matsuyama, Japan.
FAU - Minh, Tu Binh
AU  - Minh TB
FAU - Iwata, Hisato
AU  - Iwata H
FAU - Kajiwara, Natsuko
AU  - Kajiwara N
FAU - Kunisue, Tatsuya
AU  - Kunisue T
FAU - Takahashi, Shin
AU  - Takahashi S
FAU - Viet, Pham Hung
AU  - Viet PH
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 - 20070309
PL  - United States
TA  - Arch Environ Contam Toxicol
JT  - Archives of environmental contamination and toxicology
JID - 0357245
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Environmental Monitoring
MH  - Geologic Sediments/*analysis
MH  - Hydrocarbons, Chlorinated/*analysis/standards
MH  - Reference Values
MH  - Rivers
MH  - Time Factors
MH  - Vietnam
MH  - Water Pollutants, Chemical/*analysis/standards
EDAT- 2007/03/14 09:00
MHDA- 2007/09/19 09:00
CRDT- 2007/03/14 09:00
PHST- 2006/07/21 00:00 [received]
PHST- 2006/09/16 00:00 [accepted]
PHST- 2007/03/14 09:00 [pubmed]
PHST- 2007/09/19 09:00 [medline]
PHST- 2007/03/14 09:00 [entrez]
AID - 10.1007/s00244-006-0157-5 [doi]
PST - ppublish
SO  - Arch Environ Contam Toxicol. 2007 May;52(4):458-65. doi: 
      10.1007/s00244-006-0157-5. Epub 2007 Mar 9.