标准摘要
[中文适用范围]： ISO 14592 的这一部分规定了通过摇瓶批量试验评估需氧微生物对有机测试化合物的生物降解性的测试方法。 它适用于不含粗颗粒的天然地表水，以模拟远洋环境（“远洋测试”），或适用于添加悬浮沉积物以获得 0.1 克/升至 1 克/升干质量水平的地表水，以达到模拟含有悬浮沉积物的水体（“悬浮沉积物测试”）。 ISO 14592 的这一部分适用于浓度低于系统中天然碳底物浓度（通常低于 100μg/l）的有机测试化合物。 在这些条件下，测试化合物充当次要底物，生物降解动力学预计为一级（“非生长”动力学）。 不建议将此测试方法用作最终生物降解的证明，最好使用其他标准化测试进行评估（参见 ISO/TR 15462）。 它也不太适合需要更高测试浓度的代谢物形成和积累的研究。 [外文原描述]： 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.
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