Gill histopathological changes in Great sturgeon after exposure to crude and water soluble fraction of diesel oil

2012 ◽  
Vol 22 (6) ◽  
pp. 1083-1086 ◽  
Author(s):  
Abdolreza Jahanbakhshi ◽  
Aliakbar Hedayati
Keyword(s):  
Soluble Fraction ◽  
Diesel Oil ◽  
Water Soluble ◽  
Histopathological Changes ◽  
Great Sturgeon ◽  
Water Soluble Fraction

scholarly journals Histopathological analysis of liver in Puntius ticto exposed to water soluble fraction (WSF) of petrol

2010 ◽  
Vol 2 (2) ◽  
pp. 290-292
Author(s):  
Preeti Handa Kakkar ◽  
R. M. Saxena ◽  
Mamta Joshi
Keyword(s):  
Fresh Water ◽  
Histological Analysis ◽  
Soluble Fraction ◽  
Water Soluble ◽  
Lethal Concentration ◽  
Histopathological Analysis ◽  
Fresh Water Fish ◽  
Histopathological Changes ◽  
Water Soluble Fraction ◽  
Water Fish

The fresh water fish Puntius ticto were exposed to lethal concentration of water soluble fraction (WSF) of petrol (5%-PF1, 10%-PF2, 15%-PF3, 20%-PF4 and 25%-PF5) for 96 hours. The exposure of WSF produced some conspicuous histopathological changes in liver. The swelling of hepatocytes, degeneration, necrosis, hemolysis, dilation, congestion and fibrosis in blood sinusoids were the prominent changes observed. The histological analysis showed increasing damages dose-dependents and time-dependents.

Valorisation of bio-oil resulting from fast pyrolysis of wood

2014 ◽  
Vol 68 (9) ◽  
Author(s):  
Paul Vanderauwera ◽  
Dorine Wambeke
Keyword(s):  
Molecular Mass ◽  
Soluble Fraction ◽  
Complex Mixture ◽  
Diesel Oil ◽  
Water Soluble ◽  
Water Soluble Fraction ◽  
Noble Metal Catalysts ◽  
Hydrophilic Lipophilic Balance ◽  
Bio Oil ◽  
Oil Emulsions

AbstractBio-oil resulting from the pyrolysis of lignocellulose is a complex mixture of polar low molecular mass oxygenated compounds of various functionalities and non-polar high molecular mass lignin derivatives. Several approaches to the upgrading of bio-oil are currently in progress. This study investigates the valorisation of crude bio-oil using physical and chemical methods. The effects of methanol addition on some properties of the bio-oil are investigated. Stable bio-oil/diesel oil emulsions are produced by the addition of surfactants with a hydrophilic-lipophilic balance value of 5–6. An alternative approach towards the upgrading of bio-oil is the hydrotreatment of the water-soluble fraction of bio-oil. Two-stage hydroprocessing with noble-metal catalysts Ru/C and Pt/C increases the intrinsic hydrogen content of the water-soluble fraction. The results show that the thermally unstable components including sugars, ketones and aldehydes are readily converted to diols and alcohols at pressures of 5 MPa. These observations can be explained by a set of reaction pathways for the compounds identified.

scholarly journals Acute toxicity of the water-soluble fraction of diesel in Prochilodus vimboidesKner (Characiformes: Prochilodontidae)

2013 ◽  
Vol 11 (1) ◽  
pp. 193-198 ◽  
Author(s):  
Celina Alcoforado Santos ◽  
Dominik Lenz ◽  
Geisamanda Pedrini Brandão ◽  
Adriana Regina Chippari-Gomes ◽  
Levy Carvalho Gomes
Keyword(s):  
Soluble Fraction ◽  
Micronucleus Test ◽  
Exposure Period ◽  
Diesel Oil ◽  
Water Soluble ◽  
Control Fish ◽  
Control Group ◽  
Water Soluble Fraction ◽  
Significant Difference ◽  
And Control

Diesel oil can be a source of contamination in aquatic environments, mainly as a result of spills. The effects of the water-soluble fraction of diesel (WSF) on Prochilodus vimboideswere assessed. Fish were exposed to three different WSF dilutions for up to 96 h and were compared to a control group. Damages in the fragments of DNA were analyzed using the Comet assay. The presence of erytrocyts abnormalities was assessed by micronucleus test. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activity and the accumulation of copper in gills were also analyzed. Fish exposed for 96 h had higher rates of damage than those exposed for 24 h. There was no significant difference regarding the presence of micronuclei between exposed and control fish and between 24-h and 96-h exposures. For AST, no significant difference was observed between samples collected at the two exposure times. Fish exposed to a 1:100 dilution of WSF showed higher activity of the enzyme ALT than the control fish after a 24-h exposure period. There was no bioaccumulation of copper in the gills. We conclude that the genotoxic effects of WSF in the cells are more evident in P. vimboides during an acute exposure.

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