1 International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban-rural Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, Harbin Institute of Technology, Harbin 150090, China; Faculty of Chemistry, Biotechnology and Food Sciences (KBM), Norwegian University of Life Sciences (NMBU), Oslo 1430, Norway.
2 Department of Chemistry and Biochemistry, Concordia University, Montreal H3G 1M8, Canada.
3 Helmholtz-Zentrum Hereon, Institute of Coastal Environmental Chemistry, Geesthacht 21502, Germany.
4 Institute of Natural Sciences, North-Eastern Federal University, Yakutia 677, Russia.
5 Department of Environmental Science, Aarhus University, Roskilde 4000, Denmark.
6 Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
7 Arctic Knowledge Ltd, Former Executive Secretary, Arctic Monitoring and Assessment Programme (AMAP), Oslo 0349, Norway.
8 School of Public Health, University of Nevada, Reno, NV 89557-274, USA.
9 Key Laboratory of Polar Science, Ministry of Natural Resources, Polar Research Institute of China, Shanghai 200136, China; School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China.
10 International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban-rural Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, Harbin Institute of Technology, Harbin 150090, China.
11 International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban-rural Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, Harbin Institute of Technology, Harbin 150090, China; IJRC-PTS-NA, Toronto M2N 6X9, Canada.
12 International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban-rural Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, Harbin Institute of Technology, Harbin 150090, China; Faculty of Chemistry, Biotechnology and Food Sciences (KBM), Norwegian University of Life Sciences (NMBU), Oslo 1430, Norway. Electronic address: zifeng_zhang@aliyun.com.
13 International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, Harbin Institute of Technology, Harbin 150090, China; Faculty of Chemistry, Biotechnology and Food Sciences (KBM), Norwegian University of Life Sciences (NMBU), Oslo 1430, Norway; University of the Arctic (UArctic), Rovaniemi 96300, Finland. Electronic address: roland.kallenborn@nmbu.no.
14 Environment and Climate Change Canada, Burlington L7S1A1, Canada; School of Environmental Sciences, University of Guelph, Guelph N1G 2W1, Canada; Department of Chemistry, University of Toronto, Toronto M5S 3H6, Canada. Electronic address: derekcgmuir@gmail.com.

Arctic ecosystems face significant threats from chemicals of global concern. Persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs) have been consistently detected in the Arctic through decades of monitoring. POPs are known to bioaccumulate in food webs, and both POPs and PAHs are toxic posing risks to wildlife and human health. While regular monitoring activities have been implemented in most Arctic countries, information from the Russian Arctic is still limited. This review synthesizes the existing knowledge on environmental fate and distribution pathways of POPs, PAHs, and Chemicals Of Emerging Arctic Concern (CEACs) in the Russian Arctic. Except for recent studies on microplastics, data on CEACs remain very limited. Considering mass exchange processes between environmental compartments, including the cryosphere, this review focuses on the Russian Arctic coastal seas, where riverine transport and atmospheric deposition are the main sources of legacy POPs and PAHs. Northward-draining Russian Arctic rivers have been loading legacy POPs from historical sources to coastal seawater. Ongoing volatilization of low-molecular-weight PAHs from both sediments and seawater in the Russian Arctic coastal seas is likely to be accelerated with the ongoing warming climate. PAH and POPs stored in the cryosphere of the Russian Arctic are expected to be released with the ice/snow melting and permafrost thaws. However, more up-to-date information on these chemicals is needed to evaluate these processes and their significance for Arctic pollution.