Use of micronucleus test technique to evaluation the water pollution index of heavy metal

Ling, N.

Chinese Journal of Environmental Science 14(3): 76-79, 95-96

1993


ISSN/ISBN: 0250-3301
Accession: 009705948

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Abstract
Micronucleus test technique in vicia faba root tips and ortnogonal design-based experiments have been used to monitor the pollution by model wastewater containing different levels of Pb, Cd, Cr and As. The results show that the difference of micronucleus frequency (MCNF) among each treatments are significant or very significant as compared with the control. When the pollution index is lt 1.68, the water is not considered to be polluted by heavy metal pollutants; when the pollution index is gt 1.68-2.98, the content of -heavy metal pollutants in the wastewater is not over the standard capacity; when the pollution index is gt 2.98-4.9, the pollutants are not over the standard capacity but there is at least a kind of pollutants that complies with the second standard capacity of irrigation water; when the pollution index is gt 4.90-5.38, there are one or two heavy metal pollutants over standard capacity; when the pollution index is gt 5.38, there axe at least 3 kinds of heavy metal pollutants over standard capacity.