Arsenic and Cadmium Contamination in Water, Sediments and Fish is a Consequence of Paddy Cultivation: Evidence of River Pollution in Sri Lanka
| Autor: | T. Sivananthawerl, U. Edirisinghe, T. V. Sundarabarathy, PA Chintaka T. Perera, Suranga P. Kodithuwakku |
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| Rok vydání: | 2016 |
| Předmět: |
Gill
010504 meteorology & atmospheric sciences chemistry.chemical_element Anabas testudineus 010501 environmental sciences 01 natural sciences Arsenic Biology 0105 earth and related environmental sciences Trace elements Cadmium Channa striata biology business.industry Water General Medicine biology.organism_classification Bioaccumulation Fish chemistry Agriculture Environmental chemistry Etroplus suratensis Environmental science business |
| Zdroj: | Scipedia Open Access Scipedia SL |
| ISSN: | 2078-1520 |
| DOI: | 10.1016/j.als.2016.11.002 |
| Popis: | The upper Malwathu Oya is a seasonal river. The main livelihood of people living in the immediate vicinity of the river is paddy cultivation, and chronic kidney disease is reported among them. Farmers utilize different types of agricultural chemicals in their fields expecting bumper harvests. Several agricultural chemicals have been reported to contain toxic trace elements in Sri Lanka. Therefore, arsenic and cadmium might end up in the river water. The presence of these trace elements in the river water and sediments can result in their bioaccumulation in fish tissues. The main purpose of this study was to investigate the presence of two trace elements in water and sediments, as well as in fish tissues (gills, kidney, liver and muscle) of three food fish species, Etroplus suratensis, Anabas testudineus and Channa striata during cultivating and non-cultivating seasons of the year. Further, the level of bioaccumulation of two trace elements in fish tissues in relation to the contamination level of water and sediments was assessed. Data were gathered for 43months. Arsenic and cadmium concentration in water showed a significant (P |
| Databáze: | OpenAIRE |
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