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Agriculture and Environmental Science Academy (AESA) is a registered under the societies registration act XXI of 1860 with its head office in Haridwar (Uttarakhand), India. AESA is a non- profit organization and is an interdisciplinary research organization and it’s dedicated for issues in the field of social, environment and agriculture development. It has been established for providing a wide range of social activities, environmental awareness, sustainable agriculture, educational work in the field of pollution, health, sanitation, forest, wi [...]

Journal Article

Journal article

Preliminary toxicity assessment of chromium (Cr) and lead (Pb) on terrestrial snail (Helix aspersa)  [2020]

Dhiman, Varun;

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Chromium and lead are among the major toxicants that have their own environmental concerns and are very harmful for living organisms even in small concentrations. The present study is performed to evaluate the acute toxicity potential of chromium and lead on terrestrial garden snail (Helix aspersa) at different concentration ranges from 1.0 mg/L to 20 mg/L at different exposure time. In determining acute toxicity, LC50;values after 24, 48, 72 and 96 h for both the metals were determined by probit statistical analysis method. Graphs also plotted between percent mortality and used concentrations to obtain regression equation and R2;values. The obtained median lethal concentration (LC50) for chromium were 15.13 mg/L, 12.88 mg/L, 6.76 mg/L and 4.027 mg/L for 24, 48, 72 and 96 h period of exposure, respectively. Similarly, for lead obtained LC50;values were 15.282 mg/L, 6.095 mg/L, 2.094 mg/L and 1.352 mg/L for 24, 48, 72 and 96 h period of exposure, respectively. The study signifies the role of these metals in causing metal stress which leads to variation in electrolytes and A/G (Albumin to Globulin) ratio. The analysis of obtained results revealed that chromium is less toxic to;H. aspersa;in comparison to lead at similar concentrations and exposure time. It is concluded that the present study is one of its own kind of approach which may contribute in developing standard protocols for determining preliminary toxicity assessment of different heavy metals.

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Archives of Agriculture and Environmental Science

ISSN : 2456-6632