Water quality — Determination of surfactants — Part 2: Determination of non-ionic surfactants using Dragendorff reagent
水质与灰分;表面活性剂的测定第2部分:使用Dragendorff试剂测定非离子表面活性剂
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.