ISO 14592-2:2002 水质-低浓度器官化合物依靠氧气生物降解能力评定-第2部分：附着生物的江河模块连续流

标准编号：ISO 14592-2:2002

中文名称：水质-低浓度器官化合物依靠氧气生物降解能力评定-第2部分：附着生物的江河模块连续流

英文名称：Water quality — Evaluation of the aerobic biodegradability of organic compounds at low concentrations — Part 2: Continuous flow river model with attached biomass

发布日期：2002-11

标准范围

ISO 14592-2:2002规定了一种通过带有附着生物量的连续流河流模型评估天然水中需氧微生物对有机试验化合物的生物降解性的方法。ISO 14592-2:2002适用于浓度低于系统中天然碳基质浓度的有机试验化合物。在这些条件下，试验化合物作为二级基质，生物降解动力学预计为一级动力学（非生长动力学）。ISO 14592-2:2002适用于有机试验化合物，其在试验条件下和选择的试验浓度下为水溶性，可通过适当的分析方法进行定量检测，或以放射性标记形式提供，不易从水溶液中挥发，不显著吸附，不光解，且对试验系统的微生物无抑制作用。不建议将该试验用作最终生物降解性（矿化）的证明，使用其他标准化试验可以更好地评估最终生物降解性。

ISO 14592-2:2002 specifies a method for evaluating the biodegradability of organic test compounds by aerobic microorganisms in natural waters by means of a continuous flow river model with attached biomass.ISO 14592-2:2002 is applicable to organic test compounds present in lower concentrations than those of natural carbon substrates also present in the system. Under these conditions, the test compounds serve as a secondary substrate and the kinetics for biodegradation would be expected to be first order (non-growth kinetics).ISO 14592-2:2002 is applicable to organic test compounds, which under the conditions of the test and at the chosen test concentration, are water soluble, quantitatively detectable with appropriate analytical methods or available in radiolabelled form, non-volatile from aqueous solution, not significantly adsorbed, not photolyzed and not inhibitory to the microorganisms of the test system.This test is not recommended for use as proof of ultimate biodegradability (mineralization) which is better assessed using other standardized tests.

标准预览图