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《Journal of Jinan University》 1991-03
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ON THE RESPONSE OF VASCULAR HYDROPHYTES TO CHROMIUM POLLUTION IN WATER SYSTEM AND ALIGNED EFFECT OF PURIFICATION

Li Qianhu Liu Mingxin Yan Suzhu Zhen Jieshen (Dept. of Biology)  
Two types of vascular hydrophytes, submerged and floating plants were tested with artificial nutrient solution with additional potassium dichromate. All the four species of tested plants absorb and enrich chromium in aqulous solution. The absorbing and enriching abilities are different in different types of quatic plants. The accumulative ability is higher in floating plants than in submerged plants at lower concentration (3ppm) of chromium. Submerged plants are more sensitive to harmful influence of Cr-pollution than floating plants. Within a certair range of concentrations of chromium, there is a linear correlation between the chlorophyll content of vallisneria leves and the concentration of chromium in aqulous solution. Hence the change of chlorophyll content of this plant may be used for an index to determine the threshold concentration of injury of chromium. It is suitable using sensitive plants as vallisneria for biological monitoring to the Cr-pollution in water systems.
【Fund】: 国家自然科学基金
【CateGory Index】: Q94-34;X1
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