Risk assessment of lead and cadmium on Juveniles of Cyprinus carpio in laboratory scale

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Thi Yen Ta Thi Trinh Le Thi Thuy Trinh Thi Tham Trinh Thi Mai Thao Pham Thi Hong Phuong Pham


This paper assesses the risk of lead and cadmium heavy metals on Cyprinus carpio in laboratory conditions. The research determined the 96 hours LC50 value of lead nitrate and cadmium nitrate in the fish Cyprinus carpio. This study combined the ecological toxicology test with the ecological hazard description to determine the acute toxicity effects of lead and cadmium on Cyprinus carpio. Ecological toxicology took place in 96 hours with test concentration of 0.25; 0.5; 1.0; 1.5; 2.0 mg/l on lead and 0.5; 1.0; 1.5; 2.0; 3.0 mg/l on cadmium. Through probit analysis, the LC50 after 96 hours of lead and cadmium in Cyprinus carpio was found to be 0.987 mg/l and 1.171 mg/l, respectively. Through monitoring the biological behaviour of Cyprinus carpio when exposed to lead and cadmium, it was observed that the number of deaths is proportional to the concentration of chemical exposure time. The abnormal morphology and behaviour of the fish also increased with testing time and lead and cadmium concentration. Cyprinus carpio also absorbs lead and cadmium in its body; the cumulative content is similar as above.


DOI: https://doi.org/10.31276/VJSTE.60(2).78

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How to Cite
TA, Thi Yen et al. Risk assessment of lead and cadmium on Juveniles of Cyprinus carpio in laboratory scale. Vietnam Journal of Science, Technology and Engineering, [S.l.], v. 60, n. 2, p. 78-83, june 2018. ISSN 2525-2461. Available at: <http://vietnamscience.vn/index.php/VJSTE/article/view/125>. Date accessed: 21 july 2019.