PMID- 29166826
OWN - NLM
STAT- MEDLINE
DCOM- 20181211
LR  - 20220409
IS  - 1477-0393 (Electronic)
IS  - 0748-2337 (Linking)
VI  - 34
IP  - 1
DP  - 2018 Jan
TI  - Polychlorinated biphenyls (PCBs) in River Niger, Nigeria: Occurrence, 
      distribution and composition profiles.
PG  - 54-67
LID - 10.1177/0748233717736122 [doi]
AB  - Contamination of rivers with persistent organic pollutants (POPs) is an issue of 
      current global concern. Polychlorinated biphenyls (PCBs) are POPs with origin 
      from commercial, incineration and industrial sources. Hence, there is a need for 
      monitoring their occurrence and distribution in the environment. This study 
      assessed the occurrence, distribution and composition profiles of PCBs in River 
      Niger, Nigeria. Surface and bottom water samples were collected in consecutive 
      quarters for a period of 2 years, covering the beginning and end of the rainy 
      seasons and the dry seasons, from five locations (Gurara, Lokoja, Onitsha, Brass 
      and Nicolas) along River Niger. A total of 240 water samples were collected using 
      a Van Dorn water sampler. EPA method 3510c was used with slight modifications for 
      sample preparation and analysis. The PCBs were analysed using a Hewlett Packard 
      GC 5890 Series 11 with electron capture detection, and confirmation was made 
      using a Shimadzu GCMS QP2010. The higher molecular weight marker PCBs ( summation operatorCB 138, 
      153 and 180) were more dominant than the lighter homologues ( summation operatorCB 28, 52 and 101), 
      while commercial sources Co-PCBs (80.8 +/- 61.7 to 288.3 +/- 102.0 ng L(-1)) were 
      more dominant than the incineration sources (34.9 +/- 3.82 to 75.5 +/- 65.2 ng 
      L(-1)). The POPs load in River Niger water varied in both time and space. In 
      surface water of the River Niger,  summation operatorPCBs were higher during the rainy season, as a 
      result of storm run-off from land-based sources. In the Brass and Nicolas Rivers 
      during the dry season, the  summation operatorPCBs were higher during low tide. There was no 
      noticeable pattern during the rainy season. It may be concluded from this study 
      that the water of River Niger is not good for human consumption or abstraction of 
      water from the river for drinking water treatment.
FAU - Unyimadu, J P
AU  - Unyimadu JP
AD  - 1 Nigerian Institute for Oceanography and Marine Research, Victoria Island, 
      Lagos, Nigeria.
FAU - Osibanjo, O
AU  - Osibanjo O
AD  - 2 Department of Chemistry, University of Ibadan, Ibadan, Nigeria.
FAU - Babayemi, J O
AU  - Babayemi JO
AD  - 3 Department of Chemical and Food Sciences, Bells University of Technology, Ota, 
      Nigeria.
LA  - eng
PT  - Journal Article
DEP - 20171122
PL  - England
TA  - Toxicol Ind Health
JT  - Toxicology and industrial health
JID - 8602702
RN  - 0 (Water Pollutants, Chemical)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Environmental Monitoring/*methods
MH  - Geologic Sediments/analysis
MH  - Niger
MH  - Polychlorinated Biphenyls/*analysis/chemistry
MH  - Rivers/*chemistry
MH  - Seasons
MH  - Water Pollutants, Chemical/*analysis
OTO - NOTNLM
OT  - Polychlorinated biphenyls (PCBs)
OT  - River Niger
OT  - distribution and composition profiles of PCBs
OT  - persistent organic pollutants (POPs)
OT  - pollution
EDAT- 2017/11/24 06:00
MHDA- 2018/12/12 06:00
CRDT- 2017/11/24 06:00
PHST- 2017/11/24 06:00 [pubmed]
PHST- 2018/12/12 06:00 [medline]
PHST- 2017/11/24 06:00 [entrez]
AID - 10.1177/0748233717736122 [doi]
PST - ppublish
SO  - Toxicol Ind Health. 2018 Jan;34(1):54-67. doi: 10.1177/0748233717736122. Epub 
      2017 Nov 22.