Publication Date:
2021-05-19
Description:
Research on eliminating organic pollutants in water by using heterogeneous
photocatalysts such as nano-TiO_2 abound. However, the question is whether
metabolites, resulting from optical dispersion of environmental pollutants, are still toxic
to aquatic organisms. Therefore, this study was designed to evaluate the effect of a coexposure to paraquat and TiO_2-NPs on blood biochemical indices of common carp. Fish
were exposed to 0.2 and 0.4 mg L^-1
paraquat with 0.125 mg L^-1
TiO_2-NPs for 21 days
under different light conditions, including natural photoperiod (16 L 8h^-1 D) and
complete darkness. No significant alterations in the Aspartate aminotransferase (AST),
Alanine aminotransferase (ALT), Lactate dehydrogenase (LDH), Alkaline phosphatase
(ALP) and Creatine phosphokinase (CPK), activities and total protein, albumin,
globulin, glucose, cholesterol and triglyceride levels were observed in fish exposed to
TiO_2-NPs and 0.2 mg L^-1
paraquat under normal lighting conditions. However, a
significant change in blood biochemical indices in fish exposed to TiO2-NPs with 0.4
mg L^-1 paraquat (16 L 8h^-1 D) and in fish exposed to TiO_2-NPs and paraquat (under
darkness). A significant decrease in the activity of Gamma-glutamyltransferase (GGT)
and a significant increase in creatinine level were observed in all groups which were
exposed to TiO_2-NPs and paraquat. The results of this study indicate that using 0.125
mg L^-1
nano-TiO2 in order to remove paraquat (0.2 mg L^-1
) under lighting conditions
can minimize the adverse effects of paraquat and its metabolites on blood biochemical
indices of fish. So, using nano-TiO_2 (0.125 mg L^-1
) to remove paraquat under lighting
conditions can significantly reduce its toxic effects.
Description:
Published
Keywords:
Common carp
;
Cyprinus carpio
;
Biochemical
;
Biochemical parameters
;
Paraquat
;
TiO2
;
Photocatalyst
;
Blood
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp.242-255
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