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在自然水体中生存着大量的浮游生物,它们不仅是鱼类的重要饵料,而且因许多绿藻可以通过光合作用在水内放出大量氧气;许多浮游动物能大量吞食水中细菌及有机物,因此浮游生物对水体的自净起着重要作用。当含有毒物的工业废水排入水体时,不仅恶化水质,而且可能造成浮游生物的死亡。本实验选择了对毒物较敏感的大型蚤做为浮游动物的代表,选择了栅藻做为浮游植物的代表,对聚苯乙烯车间废水中所含的乙苯、二甲苯、苯、甲苯等物质进行了毒性试验研究。
In natural waters, there are a large number of planktons that are not only important fishes for fish, but also because many green algae emit large amounts of oxygen in the water through photosynthesis. Many zooplankton can ingest large quantities of bacteria and organic matter in water, so plankton Self-purification of the water plays an important role. When industrial waste water containing toxic substances is discharged into a water body, not only the water quality is deteriorated, but also the death of plankton may be caused. In this experiment, Daphnia magna, which is more sensitive to poison, was selected as the representative of zooplankton. As a representative of phytoplankton, Scenedesmus was selected as the representative of the phytoplankton. Ethylbenzene, xylene, benzene, toluene and other substances Toxicity studies were conducted.