GB/T 27853-2011
ActiveChemicals - Aerobic and anaerobic transformation in aquatic sediment systems test
化学品 水-沉积物系统中好氧厌氧转化试验
Catalogue
前言 → 引言 → 1 范围 → 2 规范性引用文件 → 3 术语和定义 → 4 受试物信息 → 5 试验原理 → 6 参比物质 → 7 试验方法概述 → 8 试验程序 → 9 质量保证与质量控制 → 10 数据与报告 → 附录A → 附录B → 附录C → 附录D → 参考文献 Foreword → Introduction → 1 Scope → 2 Normative References → 3 Terms and Definitions → 4 Test Substance Information → 5 Test Principle → 6 Reference Substances → 7 Overview of Test Methods → 8 Test Procedure → 9 Quality Assurance and Quality Control → 10 Data and Report → Annex A → Annex B → Annex C → Annex D → References
Scope
This standard specifies the terms and definitions, test substance information, test principle, reference substances, overview of test methods, test procedure, quality assurance and quality control, data and report for the aerobic and anaerobic transformation test of chemicals in aquatic sediment systems. This standard is applicable to all chemicals (including radiolabeled or non-radiolabeled substances) that are low-volatile or non-volatile, water-soluble or water-insoluble, and can be accurately determined. This standard is applicable to evaluating the transformation of chemicals in freshwater and sediment, and also applicable to estuarine/seawater systems. This standard is not applicable to chemicals that are highly volatile in water and cannot be retained in water and/or sediment under the test conditions. This standard is not applicable to simulating flowing water (such as rivers) and open sea areas.
本标准规定了化学品水-沉积物系统中好氧厌氧转化试验的术语和定义、受试物信息、试验原理、参比物质、试验方法概述、试验程序、质量保证与质量控制、数据与报告。本标准适用于低挥发性或无挥发性的、水溶性或非水溶性的、能够被精确测定的所有化学品(包括放射性标记物或非放射性标记物)。本标准适用于评价化学品在淡水及沉积物中的转化，也适用于河口/海水体系。本标准不适用于在水中具有易挥发性，且本试验条件下无法在水和/或沉积物中保留的化学品。本标准不适用于模拟流水(如河流)及开放式的海域。
Normative References
Keywords
Application Summary AI generated
Environmental monitoring agencies and chemical management authorities use this standard to assess the environmental fate of chemicals entering water bodies. By simulating aerobic and anaerobic conditions, it tests the transformation rates and products of chemicals in aquatic sediment systems, providing critical data for environmental risk assessment. This standard is essential for predicting chemical persistence, ecotoxicity, and potential hazards, aiding in the formulation of chemical management policies and environmental protection measures.
环境监测和化学品管理机构使用该标准来评估化学品进入水体后的环境行为。通过模拟好氧和厌氧条件，测试化学品在水-沉积物系统中的转化速率和产物，为环境风险评估提供关键数据。该标准对于预测化学品的持久性、生态毒性和潜在危害至关重要，有助于制定化学品管理政策和环境保护措施。
AI Summary AI generated
This standard specifies a test method for aerobic and anaerobic transformation of chemicals in aquatic sediment systems, applicable to low-volatile, water-soluble or water-insoluble chemicals. The test is conducted under constant temperature and dark conditions, analyzing concentrations of the test substance and transformation products in water and sediment phases to evaluate transformation rates, mineralisation rates, and half-lives. The standard details test procedures, quality control, data reporting requirements, and provides descriptions of aerobic and anaerobic test systems. This standard is significant for assessing the persistence and ecological risk of chemicals in aquatic environments.
本标准规定了化学品在水-沉积物系统中好氧和厌氧转化试验的方法，适用于低挥发性、水溶性或非水溶性的化学品。试验在恒温避光条件下进行，通过分析水相和沉积物相中受试物及转化产物的浓度，评估转化率、矿化速率和半衰期等参数。标准详细描述了试验程序、质量控制、数据报告要求，并提供了好氧和厌氧测试系统的说明。该标准对于评估化学品在水环境中的持久性和生态风险具有重要意义。
Key Sentences extracted from text
本标准规定了化学品水-沉积物系统中好氧厌氧转化试验的术语和定义、受试物信息、试验原理、参比物质、试验方法概述、试验程序、质量保证与质量控制、数据与报告。
本标准适用于低挥发性或无挥发性的、水溶性或非水溶性的、能够被精确测定的所有化学品(包括放射性标记物或非放射性标记物)。
在实验室可控条件下(恒定的温度、避光)，分别在好氧和厌氧水-沉积物测试系统(具体情况参见附录A)中加入一定量受试物，培养一定时间后，通过对水相和沉积物相中转化产物的定性及定量分析，测定受试物和主要转化产物在水中、在沉积物中的浓度，检测受试物在水-沉积物系统中、在沉积物中的转化率。
持续培养时间通常不超过100 d。试验要一直持续到降解途径和水-沉积物分配模式的建立，或者90%的受试物通过转化和/或挥发被去除。
添加放射活性的质量平衡或回收率(见9.1)应在每个采样时间点进行计算。结果应以添加放射活性的百分率形式报告。
This standard specifies the terms and definitions, test substance information, test principle, reference substances, overview of test methods, test procedure, quality assurance and quality control, data and report for the aerobic and anaerobic transformation test of chemicals in aquatic sediment systems.
This standard is applicable to all chemicals (including radiolabeled or non-radiolabeled substances) that are low-volatile or non-volatile, water-soluble or water-insoluble, and can be accurately determined.
Under controlled laboratory conditions (constant temperature, protected from light), a certain amount of test substance is added to aerobic and anaerobic aquatic sediment test systems (see Annex A for details), and after incubation for a certain period, through qualitative and quantitative analysis of transformation products in the water phase and sediment phase, the concentrations of the test substance and main transformation products in water and sediment are determined, and the transformation rate of the test substance in the aquatic sediment system and in the sediment is detected.
The duration of continuous incubation usually does not exceed 100 d. The test shall continue until the degradation pathway and the aquatic sediment distribution pattern are established, or 90% of the test substance is removed through transformation and/or volatilization.
The mass balance or recovery rate of added radioactivity (see 9.1) shall be calculated at each sampling time point. The results shall be reported as a percentage of the added radioactivity.