标准摘要
[中文适用范围]： 指定的程序可应用于天然地表水中的浮游植物和生物测定中的藻类生长测试。 使用适当的采样，它也可以应用于底栖植物群落。 其原理是通过过滤收集藻类，提取藻类色素，用光谱法测定提取物中的叶绿素-a浓度，根据酸化前后665 nm处的吸光度差异评估叶绿素-a和褐色素浓度。 提炼。 [外文原描述]： The procedure specified can be applied for phytoplankton in natural surface waters and for testing algal growth in bio-assays. Using appropriate sampling it can also be applied to phytobenthic communities. The principle is collection of algae by filtration, extraction of algal pigments, spectrometric determination of the chlorophyll-a concentration in the extract, evaluation of the chlorophyll-a and phaeopigment concentration from the difference of absorbance at 665 nm prior to and after acidification of the extract.
英文名称Water quality — Measurement of biochemical parameters — Spectrometric determination of the chlorophyll-a concentration