【摘要】 １９９６年－１９９７年对郑州市水源水藻类污染状况进行了连续检测，采用高敏感度ＥＬＩＳＡ方法测定了微囊藻毒素含量。结果表明，郑州市水源水藻类的生长有明显的季节特征，２月及１２月份，是藻类生长的两个高峰期，藻类总密度最高达到１０６８万个／Ｌ。１９９５年７月、１９９６年１月郑州水源厂调蓄池水微囊藻毒素含量均超过２００ｎｇ／Ｌ。按照Ｃａｒｌｓｏｎ提出的富营养化指数ＴＳＩ判定标准，结合总氮、总磷、ＣＯＤ及藻类密度等指标，认为郑州市水源水已呈现富营养化特征。建议对郑州市水源水藻类毒素的季节变化，浮游藻类的密度、组成及优势藻种的生长变化规律等做进一步的研究。更多还原

【Abstract】 Planktonic algae and microcystins (MCYST) were detected constantly in water sources of Zhengzhou City from 1996 to 1997. There is significant seasonal variation of the density of algae. The peak of algae occurring in February and December is about 1068 000/L. The contents of MCYST in July, 1995 and in January, 1996 were over 200 ng/L. According to the Carlson′s trophic state index(TSI), and indexes of total nitrogen, phosphorus, COD value and algae density, an eutrophication of water source having emerged in Zhengzhou is considered.更多还原