PMID- 36395907
OWN - NLM
STAT- MEDLINE
DCOM- 20221205
LR  - 20240102
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Print)
IS  - 0269-7491 (Linking)
VI  - 316
IP  - Pt 2
DP  - 2023 Jan 1
TI  - An exploratory spatial contaminant assessment for polar bear (Ursus maritimus) 
      liver, fat, and muscle from northern Canada.
PG  - 120663
LID - S0269-7491(22)01877-2 [pii]
LID - 10.1016/j.envpol.2022.120663 [doi]
AB  - Since the industrial era, chemicals have been ubiquitous in worldwide ecosystems. 
      Despite the discontinued release of highly toxic persistent organic pollutants 
      (POPs) in the environment, the levels of some POPs are still being measured in 
      the Canadian Arctic. These contaminants are of great concern due to their 
      persistence, toxicity, and levels of bioaccumulation in food chains. Animals 
      occupying top trophic positions in the Canadian Arctic, particularly polar bears, 
      are exposed to these contaminants mainly through their diet. Our study 
      investigated the levels of 30 metals (including total and methyl mercury) 
      alkaline and alkaline earth metals, 15 polycyclic aromatic compounds and their 
      alkyl congeners (PACs), 6 chlordanes (CHLs), and 20 polychlorinated biphenyls 
      (PCBs), in 49 polar bears from the Canadian Arctic. Contaminant burden was 
      measured in liver, muscle, and fat in bears of different sex, age, and locations. 
      A principal component analysis did not distinguish differences between age and 
      sex profiles for most contaminants. However, the concentrations measured and 
      their distribution in the tissues confirm findings observed in past studies. This 
      study highlights the importance of continual monitoring of polar bear health 
      (e.g., newly detected PACs were measured within this study) and evaluating those 
      impacts for the next generations of polar bears.
CI  - Copyright (c) 2022 Elsevier Ltd. All rights reserved.
FAU - Boutet, V
AU  - Boutet V
AD  - Institut national de la recherche scientifique (INRS), Quebec, Canada.
FAU - Dominique, M
AU  - Dominique M
AD  - Institut national de la recherche scientifique (INRS), Quebec, Canada.
FAU - Eccles, K M
AU  - Eccles KM
AD  - National Institute of Environmental Health Science, Division of the National 
      Toxicology Program, Durham, USA.
FAU - Branigan, M
AU  - Branigan M
AD  - Government of the Northwest Territories, Canada.
FAU - Dyck, M
AU  - Dyck M
AD  - Government of Nunavut, Department of Environment, Igloolik, NU, Canada.
FAU - van Coeverden de Groot, P
AU  - van Coeverden de Groot P
AD  - Biology Department, Queen's University, Kingston, ON, Canada.
FAU - Lougheed, S C
AU  - Lougheed SC
AD  - Biology Department, Queen's University, Kingston, ON, Canada.
FAU - Rutter, A
AU  - Rutter A
AD  - School of Environmental Studies, Queen's University, Kingston, ON, Canada.
FAU - Langlois, V S
AU  - Langlois VS
AD  - Institut national de la recherche scientifique (INRS), Quebec, Canada. Electronic 
      address: valerie.langlois@inrs.ca.
LA  - eng
GR  - Z99 ES999999/ImNIH/Intramural NIH HHS/United States
PT  - Journal Article
DEP - 20221114
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (Polycyclic Compounds)
SB  - IM
MH  - Animals
MH  - *Ursidae
MH  - Ecosystem
MH  - Canada
MH  - Muscles
MH  - Liver
MH  - *Polycyclic Compounds
PMC - PMC10163957
MID - NIHMS1891877
OTO - NOTNLM
OT  - Arctic
OT  - Metals
OT  - Persistent organic compounds
OT  - Pesticides
OT  - Polychlorinated biphenyls
OT  - Polycyclic aromatic compounds
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2022/11/18 06:00
MHDA- 2022/12/06 06:00
PMCR- 2024/01/01
CRDT- 2022/11/17 19:24
PHST- 2022/04/26 00:00 [received]
PHST- 2022/11/11 00:00 [revised]
PHST- 2022/11/12 00:00 [accepted]
PHST- 2022/11/18 06:00 [pubmed]
PHST- 2022/12/06 06:00 [medline]
PHST- 2022/11/17 19:24 [entrez]
PHST- 2024/01/01 00:00 [pmc-release]
AID - S0269-7491(22)01877-2 [pii]
AID - 10.1016/j.envpol.2022.120663 [doi]
PST - ppublish
SO  - Environ Pollut. 2023 Jan 1;316(Pt 2):120663. doi: 10.1016/j.envpol.2022.120663. 
      Epub 2022 Nov 14.