|
| Acute Toxic Effects of Oil Dispersant-treated Pinghu Crude Oil on Marine Organisms |
| Received:June 08, 2015 |
| View Full Text View/Add Comment Download reader |
| KeyWord:oil dispersant;Pinghu crude oil;marine organism;toxic effect |
| Author Name | Affiliation | | SHEN Xin-qiang | East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China | | JIANG Mei | East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China | | LI Lei | East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China |
|
| Hits: 3101 |
| Download times: 2713 |
| Abstract: |
| Crude oil has been proven to be toxic to marine organisms. However, oil dispersants may have the secondary pollution. In this study, the acute toxic effects of oil dispersant,water accommodated fraction of Pinghu crude oil(WAF) and oil dispersant-treated WAF(DWAF) on larvae and juveniles of Acanthopagrus schlegelii, juveniles of Palaemon carincauda and juveniles of Sinonovacula constrzcta were examined. Oil dispersant, WAF, and DWAF all had very significant dose-effect relationship on all the tested organisms. The 96 h LC50 values of oil dispersant for juvenile Palaemon C., larval Acanthopagrus S., juvenile Acanthopagrus S. and juvenile Sinonovacula C. were 57.55 mg·L-1, 136 mg·L-1, 261 mg·L-1, and 397 mg·L-1, respectively. The oil dispersant was the most toxic to juvenile Palaemon C. The 96 h LC50 values of WAF for larvae of Acanthopagrus S., juvenile Palaemon C., juvenile Acanthopagrus S. and juvenile Sinonovacula C. were 1.51 mg·L-1, 2.62 mg·L-1, 3.37 mg·L-1, and 11.62 mg·L-1, respectively. The 96 h LC50 values of DWAF for larvae of Acanthopagrus S., juvenile Palaemon C., juvenile Acanthopagrus S. and juvenile Sinonovacula C. were 0.66 mg·L-1, 1.20 mg·L-1, 1.75 mg·L-1, and 3.09 mg·L-1, respectively. The order of the 96 h LC50 for four test organisms did not change between WAF and DWAF, but DWAF was more toxic than WAF. It suggests that crude oil treated by oil dispersant would increase its toxic effects on marine organisms by increasing the type and content of aromatic contaminants dissolved in seawater. |
|
|
|
