Oil spill off the coast of Guimaras Island, Philippines: Distributions and changes of polycyclic aromatic hydrocarbons in shellfish

Seiichi Uno; Emiko Kokushi; Nathaniel C Añasco; Takenori Iwai; Kazuki Ito; Jiro Koyama

doi:10.1016/j.marpolbul.2017.03.062

Oil spill off the coast of Guimaras Island, Philippines: Distributions and changes of polycyclic aromatic hydrocarbons in shellfish

Mar Pollut Bull. 2017 Nov 30;124(2):962-973. doi: 10.1016/j.marpolbul.2017.03.062. Epub 2017 Apr 8.

Authors

Seiichi Uno¹, Emiko Kokushi², Nathaniel C Añasco³, Takenori Iwai², Kazuki Ito², Jiro Koyama²

Affiliations

¹ Education and Research Center for Marine Resources and Environment, Faculty of Fisheries, Kagoshima University, 50-20 Shimoarata 4-Chome, Kagoshima 890-0056, Japan. Electronic address: uno@fish.kagoshima-u.ac.jp.
² Education and Research Center for Marine Resources and Environment, Faculty of Fisheries, Kagoshima University, 50-20 Shimoarata 4-Chome, Kagoshima 890-0056, Japan.
³ College of Fisheries and Ocean Sciences, University of the Philippines-Visayas, Philippines, Miagao, 5024, Iloilo, Philippines.

PMID: 28400055
DOI: 10.1016/j.marpolbul.2017.03.062

Abstract

The sinking of the Solar 1 tanker caused serious heavy oil pollution around Guimaras Island, Philippines. In the present study, variations of parent polycyclic aromatic hydrocarbons (PAHs) and alkylated PAHs (alkPAHs) in some shellfish were investigated around Guimaras Island and other small islands from 3months to 5years after the spill. The total PAHs and alkPAHs in shellfish were detected in high concentrations at 448 and 33,666ng/g dry weight, respectively, in November 2006. The concentrations of alkPAHs gradually decreased, while the parent PAHs in shellfish degraded more slowly than the alkPAHs, which was likely due to the persistent characteristics of PAHs. The risks based on European Union regulations were insignificant in 2008, but total PAHs in shellfish were still over 8 times higher at the investigated sites in November 2011 than that before the oil spill.

Keywords: Alkylated PAHs; Guimaras Island; Oil spill; PAHs; Shellfish; Solar 1.

MeSH terms

Animals
Bivalvia / metabolism*
Environmental Exposure*
Environmental Monitoring
Petroleum Pollution / analysis*
Philippines
Polycyclic Aromatic Hydrocarbons / metabolism*
Shellfish*
Snails / metabolism*

Substances

Polycyclic Aromatic Hydrocarbons