Bioaccumulation of short-chain chlorinated paraffins in chicken (Gallus domesticus): Comparison to fish

• Published in: Journal of hazardous materials Vol. 396; p. 122590
• Main Authors: Sun, Runxia, Chen, Jiemin, Shao, Haiyang, Tang, Liang, Zheng, Xiaobo, Li, Qing X., Wang, Yangyang, Luo, Xiaojun, Mai, Bixian
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 05.09.2020
• Subjects: Animals; Bioaccumulation; Bioaccumulation ratio; Chicken; Chickens; China; Environmental Monitoring; Hydrocarbons, Chlorinated - analysis; Paraffin; Short-chain chlorinated paraffins; Terrestrial ecosystem; Tissue distribution; China; Terrestrial ecosystem; Bioaccumulation ratio; Chicken; Tissue distribution; Short-chain chlorinated paraffins
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2020.122590

[Display omitted] •Chicken tended to accumulate more short carbon chain and low-chlorinated SCCPs.•Accumulation ratios for SCCPs of chicken were more influenced by KOA than KOW.•Species-specific bioaccumulation of SCCPs was found between chicken and fish.•Tissue-specific bioaccumulation of SCCPs was observed in chicken. Short chain chlorinated paraffins (SCCPs) are a complex group of chlorinated organic pollutants that have raised an increasing public attention. However, limited information is currently available on the bioaccumulation of SCCPs in terrestrial birds which are abundant and widely distributed around the world. In the present study, chicken (Gallus domesticus) was used as a model organism to provide significant implications for other avian species. We investigated the transfer of SCCPs from dietary sources (feed and topsoil) to chicken and their tissue distribution behavior. SCCPs were detected in chicken feed (54−170 ng/g, dry weight), topsoil (170−860 ng/g, dry weight), and adult chicken tissues (460−13000 ng/g, lipid weight). Adult chicken tended to accumulate SCCP congeners with lower n-octanol-water partition coefficients (KOW) and octanol-air partition coefficients (KOA). The accumulation ratio values for SCCPs of the chicken were more influenced by KOA than by KOW, which was contrary to those for aquatic fish. Levels and homologue profiles of SCCPs varied among chicken tissues. SCCP levels in the livers were significantly lower than those in the other tissues (p < 0.05). The accumulation potential for SCCP congeners with higher KOW increased in the order of muscle < liver < fat.