【摘要】 目的　探讨郑州市地面饮用水源水浮游藻类和藻毒素污染的发生发展规律。方法　于1998年在郑州B水厂、S水厂水源水设采样点 ,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方法测定微囊藻毒素含量。结果　郑州市B水厂水源水月平均藻类密度为 1439×10 4 /L ,8月份最高达到 476 2× 10 4 /L。S水厂水源水月平均藻类密度为 10 71× 10 4 /L ,毒性较高的蓝藻已成为S水厂水源水的优势藻种。在 2个水厂水源水 2 4份样品中 ,微囊藻毒素的阳性检出率为70 83%。结论　郑州市水源水已呈现富营养化特征。更多还原

【Abstract】 Objective To study the law of development of pollution with algae and microcystin (MC) in source water of Yellow River in Zhengzhou city. Methods Algae and MC were detected continuously for source water samples collected from B and S Water Works of Zhengzhou in 1998. Microcystin was determined with high sensitive ELISA. Results Monthly average density of algae was 1 439× 10 4/L in source water of B Water Works of Zhengzhou, with peak algae density of 4 762× 10 4/L in August, and that of S Water Works was 1 071× 10 4/L. Blue algae of higher toxicity has become dominant species in source water from S water Works. Detection rate of microcystin was 70 83% in 24 samples collected from the two water works. Conclusion According to Carlson′s trophic state index (TSI), as well as other indices, such as total nitrogen, total phosphorus, chemical oxygen demands (COD) and algae density in water, source water in Zhengzhou has presented characteristics of eutrophication.更多还原