TY - JOUR
T1 - Occurrence and trophic transfer of aliphatic hydrocarbons in fish species from Yellow River Estuary and Laizhou Bay, China
AU - Wang, Shanshan
AU - Liu, Guijian
AU - Yuan, Zijiao
AU - Lam, Paul K.S.
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/12/15
Y1 - 2019/12/15
N2 - Petroleum pollution in aquatic environment has caused great concerns around the world, which produce harmful impacts on aquatic organisms and human health. Aliphatic hydrocarbons in the environment are mainly derived from petroleum and its products. However, limited information is available regarding their occurrence and trophic transfer behavior in aquatic biota. Here, eight fish species collected from Yellow River Estuary and Laizhou Bay were analyzed to investigate the residual level, homolog profiles and trophic magnification of aliphatic hydrocarbons. Carbon and nitrogen stable isotope ratios (δ13C and δ15N) of studied fish species ranged from −22.1 to −14.5‰ and 8.56 to 15.7‰, respectively, indicating different carbon sources and trophic positions. The lowest and highest levels of n-alkanes were found in Cyprinus carpio (376 μg/kg wet weight, ww) and Silurus asotus (8179 ± 7955 μg/kg ww), respectively. The different distribution patterns of n-alkane homologs were observed among different species, which could be attributed to their particular habitat, feeding preference and elimination activity. Analysis of biomarker indices indicated the presence of petroleum hydrocarbons in muscle tissues of studied fish species. And natural n-alkanes were probably more easily eliminated than anthropogenic n-alkanes in fish muscle tissues. Moreover, trophic magnification factor (TMF) values ranged from 0.656 to 1.15, indicating limited trophic transfer of aliphatic hydrocarbons. The octanol/water partition coefficient (KOW) probably was an important factor to affect the bioaccumulation of n-alkanes in organism-sediment system and the biomagnification along the trophic levels.
AB - Petroleum pollution in aquatic environment has caused great concerns around the world, which produce harmful impacts on aquatic organisms and human health. Aliphatic hydrocarbons in the environment are mainly derived from petroleum and its products. However, limited information is available regarding their occurrence and trophic transfer behavior in aquatic biota. Here, eight fish species collected from Yellow River Estuary and Laizhou Bay were analyzed to investigate the residual level, homolog profiles and trophic magnification of aliphatic hydrocarbons. Carbon and nitrogen stable isotope ratios (δ13C and δ15N) of studied fish species ranged from −22.1 to −14.5‰ and 8.56 to 15.7‰, respectively, indicating different carbon sources and trophic positions. The lowest and highest levels of n-alkanes were found in Cyprinus carpio (376 μg/kg wet weight, ww) and Silurus asotus (8179 ± 7955 μg/kg ww), respectively. The different distribution patterns of n-alkane homologs were observed among different species, which could be attributed to their particular habitat, feeding preference and elimination activity. Analysis of biomarker indices indicated the presence of petroleum hydrocarbons in muscle tissues of studied fish species. And natural n-alkanes were probably more easily eliminated than anthropogenic n-alkanes in fish muscle tissues. Moreover, trophic magnification factor (TMF) values ranged from 0.656 to 1.15, indicating limited trophic transfer of aliphatic hydrocarbons. The octanol/water partition coefficient (KOW) probably was an important factor to affect the bioaccumulation of n-alkanes in organism-sediment system and the biomagnification along the trophic levels.
KW - Aliphatic hydrocarbons
KW - Fish
KW - Petroleum hydrocarbons
KW - Stable isotope analysis
KW - Trophic level
KW - Trophic magnification factor
UR - http://www.scopus.com/inward/record.url?scp=85071387551&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2019.134037
DO - 10.1016/j.scitotenv.2019.134037
M3 - Article
AN - SCOPUS:85071387551
SN - 0048-9697
VL - 696
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 134037
ER -