ISO 14592-1:2002 水质-低浓度器官化合物依靠氧气生物降解能力评定-第1部分：地面水或地面水/沉淀物悬浮液的一组摇动烧瓶试验

标准编号：ISO 14592-1:2002

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1部分：地面水或地面水/沉淀物悬浮液的一组摇动烧瓶试验

英文名称：Water quality — Evaluation of the aerobic biodegradability of organic compounds at low concentrations — Part 1: Shake-flask batch test with surface water or surface water/sediment suspensions

发布日期：2002-11

标准范围

ISO 14592-1:2002规定了一种通过使用悬浮生物量的摇瓶分批试验评估地表水中需氧微生物对有机试验化合物的生物降解性的试验方法。它适用于不含粗颗粒的天然地表水，以模拟远洋环境（远洋试验），或适用于添加悬浮固体或沉积物的地表水，以获得0.1 g/l至1 g/l干质量（悬浮沉积物试验），以模拟水-沉积物界面或含有再悬浮沉积物物质的水体。ISO 14592-1:2002适用于浓度低于系统中天然碳基质浓度（通常低于100微克/升）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）。本试验方法不建议用作最终生物降解的证明，使用其他标准化试验可以更好地评估最终生物降解。它也不适用于需要更高试验浓度的代谢物形成和积累的研究。

ISO 14592-1:2002 specifies a test method for evaluating the biodegradability of organic test compounds by aerobic microorganisms in surface waters by means of a shake-flask batch test with suspended biomass. It is applicable to natural surface water, free from coarse particles to simulate a pelagic environment (pelagic test) or to surface water with suspended solids or sediments added to obtain a level of 0,1 g/l to 1 g/l dry mass (suspended sediment test) to simulate a water-to-sediment interface or a water body with resuspended sediment material.ISO 14592-1:2002 is applicable to organic test compounds present in lower concentrations (normally below 100 micrograms per litre) 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).This test method is not recommended for use as proof of ultimate biodegradation which is better assessed using other standardized tests. It is also not applicable to studies on metabolite formation and accumulation which require higher test concentrations.

标准预览图