Bioaccumulation of manufactured titanium dioxide
Bioaccumulation of manufactured titanium dioxide
Bioaccumulation of manufactured titanium dioxide
Khurram Shahzad1*, Muhammad Naeem Khan1, Farhat Jabeen2, Nasreen Kosour3, Muhammad Sohail1, Muhammad Khalil Ahmad Khan1, Munir Ahmad1
ABSTRACT
The use of various nanoparticles in industry and domestic practices enviably end
into the aquatic environment. Nanoparticles have the potential accumulative and
toxic influence in the water environments. There is a need to exploremore likely
accumulation of nanoparticles in the aquatic organisms. This study was designed
to investigate the possible bioaccumulation of TiO2, CuO and ZnO nanoparticles to
tilapia (Oreochromis mossambicus). Fish were exposed to three doses of
nanoparticles suspensions T0 (no dose administration), T1 (0.5 mg/L), T2 (1.0
mg/L) and T3 (1.5 mg/L) for 14 days. After 14 days, animals were slaughtered and
organs (gills, liver and muscles) were freeze dried. Freeze dried tissue samples
were digested with the help of nitric acid (HNO3) and perchloric acid (HClO4). Acid
digested samples were analyzed by Inductively Coupled Plasma Mass
Spectrophotometry (ICP-MS) foraccumulation of Ti, Cu and Zn nanoparticles in
various tissues (gills, liver and muscles). Ti and Cu accumulation in gills was
recorded to be 5.7033 and 3.7133 μg/Kg respectively,whereas, maximum Zn
accumulation (2375.3 μg/Kg) was observed in liver. It was concluded from the
present study that the strategy applied to assess the bioaccumulation of
nanoparticles in the soft tissues of fish is very useful tracking method to determine
the accretion in aquatic organisms.
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