Spatial distributions, source apportionment and ecological risks of C9-C17 chlorinated paraffins in mangrove sediments from Dongzhai Harbor, Hainan Island.

Environmental Pollution
Dan XiaYifei Sun

Abstract

The spatial distributions, possible sources of C9-C17 chlorinated paraffins (CPs), and the ecological risks posed in mangrove sediment in Dongzhai Harbor (Hainan Island, China) were investigated. Comprehensive two-dimensional gas chromatography combined with electron capture negative ionization mass spectrometry was used to determine 50 C9-C17 CP congener groups. The concentrations of C9-CPs, short-chain CPs (SCCPs), and medium-chain CPs (MCCPs) in the mangrove sediment samples were 8.28-79.7, 89.2-931, and 58.8-834 ng g-1 dry weight, respectively. The CPs concentrations in the mangrove sediment samples were moderate compared with those found in other regions worldwide. The spatial distributions and congener patterns of the CPs indicated that the CP concentrations were mainly controlled by local emissions and that wastewater discharged from livestock and shrimp breeding facilities and domestic sewage were the main sources of CPs in mangrove sediment in Dongzhai Harbor. C10Cl6-7 and C14Cl7-8 were the dominant SCCP and MCCP congener groups, respectively. The MCCP concentrations and total organic carbon contents significantly correlated (R2 = 0.607, P < 0.05). Hierarchical cluster analysis and principal component analysis indicate...Continue Reading

References

Sep 27, 2005·Chemosphere·Stéphane BayenJeffrey Philip Obbard
Jan 14, 2010·Archives of Toxicology·Gayathri D WarnasuriyaClifford R Elcombe
May 24, 2011·Environmental Pollution·Michael LewisLynn Wilking
May 27, 2011·Environment International·Ulrika E FridénUrs Berger
May 19, 2012·Environmental Science & Technology·Bo YuanGuibin Jiang
Sep 9, 2016·The Science of the Total Environment·Henry AlegriaPerihan Kurt-Karakus

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