FN Archimer Export Format PT J TI Pollution and ecological risk assessments for heavy metals in coastal, river, and road-deposited sediments from Apia City in Upolu Island, Samoa BT AF Jeong, Hyeryeong Ra, Kongtae AS 1:1,2;2:2,3; FF 1:;2:; C1 Ifremer, RBE/CCEM, F-44000 Nantes, France Marine Environmental Research Center, Korea Institute of Ocean Science and Technology (KIOST), Busan 49111, Republic of Korea Department of Ocean Science (Oceanography), KIOST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea C2 Ifremer, RBE/CCEM, F-44000 Nantes, France KIOST, SOUTH KOREA KIOST, SOUTH KOREA IF 5.8 TC 10 UR https://archimer.ifremer.fr/doc/00818/93018/101693.pdf LA English DT Article DE ;Metal pollution;Coastal environment;Runoff;Enrichment factor;Pollution load index;Potential ecological risk index AB This study was the first to investigate the pollution and ecological risks of heavy metals in coastal, river/stream and road-deposited sediments (RDS) from Apia in Samoa. Cr and Ni concentrations in sediment samples were higher than those of other metals. River sediments and RDS had relatively high EF values around the intensive commercial areas, with a moderate to significant enrichment of Cu, Zn, Cd, and Pb. The results indicate that Cr and Ni have a natural origin from volcanic parent materials, while Cu, Zn, Cd, and Pb originated from anthropogenic activities, such as traffic emissions and the discharge of municipal wastewater. The assessments of pollution and ecological risk revealed that coastal sediments adjacent to the river are anthropogenically contaminated and present a moderate ecological risk. This study demonstrates that metals that have accumulated in the urban impermeable layer and river/stream bed have flowed into the coastal environment through runoff. PY 2023 PD MAR SO Marine Pollution Bulletin SN 0025-326X PU Elsevier BV VL 188 UT 000924996500001 DI 10.1016/j.marpolbul.2023.114596 ID 93018 ER EF