中文摘要：

详细介绍了一种国际上通用的浮游植物叶绿素a测定方法-热乙醇萃取法，并根据文献记载和作者多年的实践经验，对这种测定方法可能产生的误差进行全面的探讨，为国内水环境研究人员尽快掌握这种方法提供了科学的参考．

英文摘要：

Hot-ethanol extraction method is a widely used method in the world to determine phytoplankton chlorophyll-a concentration. This paper aims to introduce the hot-ethanol extraction method in detail to all the scientists dealing with aquatic environment research in China. By experience from the authors, possible error during the operation of the analysis was discussed.