European Journal of Biotechnology and Bioscience

European Journal of Biotechnology and Bioscience


European Journal of Biotechnology and Bioscience
European Journal of Biotechnology and Bioscience
Vol. 4, Issue 7 (2016)

Microalgal diversity and arsenic concentration in irrigation water, soil and rice plant samples collected from West Bengal, India


Elumalai S, Mohamed Halith A

Arsenic is one of therntoxic and carcinogenic metal presents in the soil, water and some biologicalrnsamples from the Eastern parts of India. This causes many health problems withrnhuman and animals including cancer, arsenicosis. Arsenic water pollution is onernof the human problems in the recent century. Rice (Oryza sativa L.) isrnone of the major food crops in many countries. The objective of the presentrnstudy was to determine the concentration of arsenic in irrigation water, paddyrnfield soil and in the rice plants cultivated with the arsenic contaminatedrnirrigation water. Irrigation water samples, paddy field soil and microalgalrnsamples, and rice and turmeric plants were collected from 10 different placesrnof Medinipur, Howrah, Bardhaman and Hooghly districts of West Bengal, India.

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The samples were analyzedrnby atomic absorption spectroscopy (AAS) to determine arsenic concentrations.rnPhysiochemical parameters of the water samples were also analyzed andrnmicroalgal samples were microscopically identified and recorded. Thernconcentration of arsenic in the water samples of all the studied samples wasrnfound to be below detectable level (<0.005) to 0.006 mg/kg dry weight ofrnarsenic. The concentration of arsenic in the soil samples of all the studiedrnsamples was found to be between 5.87 and 13.78 mg/kg dry weight of arsenic. Thernconcentration of arsenic in the root of all the studied rice samples was rangedrnfrom below detectable level (<0.25) to 15.06 mg/kg dry weight of arsenic. Thernconcentration of arsenic in the shoot of all the studied rice samples was foundrnto be below detectable level (<0.25) to 4.69 mg/kg dry weight of arsenic.rnThe concentration of arsenic in the grain of all the studied rice samples wasrnfound to be below detectable level <0.25 mg/kg dry weight of arsenic, whichrndid not exceed the permissible limit in rice (1.0 mg/kg) according to WHOrnrecommendation.

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How to cite this article:
Elumalai S, Mohamed Halith A. Microalgal diversity and arsenic concentration in irrigation water, soil and rice plant samples collected from West Bengal, India. European Journal of Biotechnology and Bioscience, Volume 4, Issue 7, 2016, Pages 22-28
European Journal of Biotechnology and Bioscience