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Studies on the Biochemical Changes in Fresh Water Fish, Channa punctatus Exposed to the Heavy Metal Toxicant Lead Nitrate
| Content Provider | Semantic Scholar |
|---|---|
| Author | Manikandan, Perumal Shirlin, Jebitta M. Kalaiarasi, J. M. V. |
| Copyright Year | 2016 |
| Abstract | INTRODUCTION The effect of heavy metals on aquatic organism is currently attracting wide spread attention particularly in studies related to industrial pollution. High toxicity of industrial pollutants have been known since long time, but their hazardous nature as pollution of aquatic environment has been matter of concern only after a large number of deaths of fishes occurring in different areas due to different metals. Fishes live in very intimate contact with their environment, and are therefore very susceptible to physical and chemical changes which may be reflect in their blood component [1]. The application of environmental toxicology studies on non-mammalian vertebrates is rapidly expanding and for aquatic systems, fishes have become indicators for the evaluation of the effects of noxious compounds. In fishes, exposure to chemical pollutants can induce either increase or decrease in haemotological levels. Early diagnosis is also possible when evaluating haematological data, particularly blood parameters [2-4]. Furthermore, should be noted that haematological indices are of different sensitivity to various environmental factors and chemicals [5-6]. Lead is a soft, silvery gray metal, melting at 327.5 °C. It is highly resistant to Corrosion, but is soluble in nitric and hot sulfuric acids. The usual valence state in inorganic lead compounds is +2. Solubility in water vary, lead sulfide and lead oxides being poorly soluble and the nitrate, chlorate and chloride salts are reasonably soluble in cold water. Lead also forms salts with such organic acids as lactic and acetic acids, and stable organic compounds such as tetraethyl lead and tetra methyl lead, Black (2001), [7]. Heavy metal contamination has been reported in aquatic organisms. These metals build up in food chain and are responsible for chronic illness and death in aquatic organisms, which probably move |
| File Format | PDF HTM / HTML |
| Volume Number | 6 |
| Alternate Webpage(s) | http://www.ijntps.com/sites/default/files/0131.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
