PMID- 33887272
OWN - NLM
STAT- MEDLINE
DCOM- 20210630
LR  - 20210630
IS  - 1096-0953 (Electronic)
IS  - 0013-9351 (Linking)
VI  - 197
DP  - 2021 Jun
TI  - Comprehensive determination of polychlorinated biphenyls and brominated flame 
      retardants in surface sediment samples from Hanoi urban area, Vietnam: 
      Contamination status, accumulation profiles, and potential ecological risks.
PG  - 111158
LID - S0013-9351(21)00452-7 [pii]
LID - 10.1016/j.envres.2021.111158 [doi]
AB  - Comprehensive and updated information about polychlorinated biphenyls (PCBs) and 
      brominated flame retardants (BFRs) in surface sediments from Hanoi, the capital 
      city of Vietnam, is rather scarce. In this study, concentrations and profiles of 
      209 PCBs, 41 polybrominated diphenyl ethers (PBDEs), 
      2,2',4,4',5,5'-hexabromobiphenyl (BB-153), hexabromocyclododecane (HBCD), 
      pentabromoethylbenzene (PBEB), 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE), and 
      decabromodiphenyl ethane (DBDPE) were determined in sediment samples collected 
      from the Red River and some inner-city rivers of Hanoi. Concentrations (ng/g dry 
      weight, median and range) of pollutants decreased in the order: DBDPE (28; not 
      detected ND - 59)  approximately  PCBs (27; 1.7-50) > PBDEs (23; 0.20-61) > HBCD (1.2; ND - 
      5.2) > BTBPE (0.46; ND - 3.6) > BB-153 (0.004; ND - 0.014) > PBEB (ND). Pollutant 
      levels in the inner-city river sediments were about one to two orders of 
      magnitude higher than those measured in the Red River main stream sediments. 
      Tri-to hexa-CBs are major homologs but detailed profiles vary between individual 
      samples, reflecting source and/or seasonal variations. CB-11 and CB-209 were 
      found at higher proportions in sediments than in technical PCB mixtures, 
      suggesting their novel sources from pigments. Deca-BDE and DBDPE are the most 
      predominant BFRs with an increasing trend predicted for DBDPE. A preliminary 
      ecological risk assessment was conducted for these pollutants in sediments. Total 
      PCBs and deca-BDE in a few inner-city river sediments may exhibit adverse effects 
      on benthic organisms, but no serious risk was estimated in general.
CI  - Copyright (c) 2021 Elsevier Inc. All rights reserved.
FAU - Hoang, Anh Quoc
AU  - Hoang AQ
AD  - Center of Advanced Technology for the Environment, Graduate School of 
      Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, 790-8566, Japan; Faculty 
      of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le 
      Thanh Tong, Hanoi, 10000, Viet Nam. Electronic address: 
      hoangquocanh1990@gmail.com.
FAU - Takahashi, Shin
AU  - Takahashi S
AD  - Center of Advanced Technology for the Environment, Graduate School of 
      Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, 790-8566, Japan.
FAU - Da Le, Nhu
AU  - Da Le N
AD  - Laboratory of Environmental Chemistry, Institute of Natural Product Chemistry, 
      Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, 10000, Viet 
      Nam; Graduate University of Science and Technology, Vietnam Academy of Science 
      and Technology, 18 Hoang Quoc Viet, Hanoi, 10000, Viet Nam.
FAU - Duong, Thi Thuy
AU  - Duong TT
AD  - Institute of Environmental Technology, Vietnam Academy of Science and Technology, 
      18 Hoang Quoc Viet, Hanoi, 10000, Viet Nam.
FAU - Huong Pham, Thi Mai
AU  - Huong Pham TM
AD  - Hanoi University of Industry, 298 Cau Dien, Hanoi, 10000, Viet Nam.
FAU - Mai Pham, Thi Ngoc
AU  - Mai Pham TN
AD  - Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 
      19 Le Thanh Tong, Hanoi, 10000, Viet Nam.
FAU - Huong Nguyen, Thi Anh
AU  - Huong Nguyen TA
AD  - Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 
      19 Le Thanh Tong, Hanoi, 10000, Viet Nam.
FAU - Tran, Tri Manh
AU  - Tran TM
AD  - Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 
      19 Le Thanh Tong, Hanoi, 10000, Viet Nam.
FAU - Tu, Minh Binh
AU  - Tu MB
AD  - Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 
      19 Le Thanh Tong, Hanoi, 10000, Viet Nam.
FAU - Quynh Le, Thi Phuong
AU  - Quynh Le TP
AD  - Laboratory of Environmental Chemistry, Institute of Natural Product Chemistry, 
      Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, 10000, Viet 
      Nam; Graduate University of Science and Technology, Vietnam Academy of Science 
      and Technology, 18 Hoang Quoc Viet, Hanoi, 10000, Viet Nam. Electronic address: 
      quynhltp@gmail.com.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20210420
PL  - Netherlands
TA  - Environ Res
JT  - Environmental research
JID - 0147621
RN  - 0 (Flame Retardants)
RN  - 0 (Halogenated Diphenyl Ethers)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Environmental Monitoring
MH  - *Flame Retardants/analysis
MH  - Halogenated Diphenyl Ethers/analysis
MH  - *Polychlorinated Biphenyls
MH  - Vietnam
OTO - NOTNLM
OT  - BFRs
OT  - Developing country
OT  - PCBs
OT  - Sediment
OT  - Urban rivers
EDAT- 2021/04/23 06:00
MHDA- 2021/07/01 06:00
CRDT- 2021/04/22 20:12
PHST- 2021/03/06 00:00 [received]
PHST- 2021/04/04 00:00 [revised]
PHST- 2021/04/07 00:00 [accepted]
PHST- 2021/04/23 06:00 [pubmed]
PHST- 2021/07/01 06:00 [medline]
PHST- 2021/04/22 20:12 [entrez]
AID - S0013-9351(21)00452-7 [pii]
AID - 10.1016/j.envres.2021.111158 [doi]
PST - ppublish
SO  - Environ Res. 2021 Jun;197:111158. doi: 10.1016/j.envres.2021.111158. Epub 2021 
      Apr 20.