标准摘要
[中文适用范围]： 适用于低浓度铋活性物质的测定。 该方法适用于污水处理厂进水、出水及废水。 在调查地表水时，可能需要处理大量样品。 [外文原描述]： Applies to the determination of low concentrations of bismuth active substances. The method is suitable for influents and effluents of sewage treatment plants and waste water. When investigating surface waters it may be necessary to handle large sample volumes.
英文名称Water quality — Determination of surfactants — Part 2: Determination of non-ionic surfactants using Dragendorff reagent