Variation and distribution of naphthenic acids in Dalian Bay sediment

Previous studies that have investigated marine oil pollution have predominantly focused on petroleum hydrocarbons. Naphthenic acids (NAs), in contrast, are toxins that are less well studied. Following the Dalian oil spill accident, monitoring surveys were carried out to investigate NAs in Dalian Bay...

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Bibliographic Details
Published in:Marine pollution bulletin 2019-03, Vol.140, p.597-602
Main Authors: Zan, Shuaijun, Wang, Jing, Wang, Fengbo, Han, Ying, Du, Miaomiao, Fan, Jingfeng
Format: Article
Language:English
Subjects:
Acids
Aromatic compounds
Aromatic hydrocarbons
Carboxylic acids
Coastal sediment
Correlation analysis
Dalian bay
Environmental monitoring
Hydrocarbons
Marine environment
Marine pollution
Motorcycles
Naphthenic acids
Oil pollution
Oil spill
Oil spills
Petroleum hydrocarbons
Pollutants
Pollution
Pollution monitoring
Polycyclic aromatic hydrocarbons
Sediment
Sediment pollution
Sediments
Surveys
Toxins
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Summary:Previous studies that have investigated marine oil pollution have predominantly focused on petroleum hydrocarbons. Naphthenic acids (NAs), in contrast, are toxins that are less well studied. Following the Dalian oil spill accident, monitoring surveys were carried out to investigate NAs in Dalian Bay sediments. Concentrations of NAs were between 14.826 and 34.279 mg kg−1, with acyclic and motorcycle carboxylic acids (43.28% and 35.12%, respectively) being the dominant components. NAs were 10–30 times more abundant than polycyclic aromatic hydrocarbons (PAHs) in the sediment. Further correlation analysis showed the abundance of NAs was highly correlated with total PAH levels (0.705, p 
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2019.01.061