Discussion on possible error for pbytoplankton chlorophyll-a concentration analysis using hot-ethanol extraction method

Hot-ethanol extraction method is a widely used method in the world to determine phytoplankton chloro- phyll-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 oper- ation of the analysis was discussed.