TS 11557

TS 11557 is a terminology standard that organises the terms and definitions used for halogenated and non-halogenated compounds accumulated in aquatic environments. In the context of water pollution control, this kind of standard helps ensure that the same concepts are used consistently in research, monitoring and reporting.

Technical meaning of the covered concepts

The standard focuses on the naming of halogenated compounds and halogen-free compounds that can accumulate in organisms living in water. Halogenated compounds generally refer to chemical structures containing chlorine, bromine, fluorine or iodine, while halogen-free compounds are those that do not include these elements. This distinction matters because environmental data must separate different contaminant groups in a clear and comparable way.

In broader technical use, terminology standards distinguish between chemical identity and environmental behaviour. Concepts such as accumulation, persistence and transport in aquatic systems are important not only for naming substances but also for interpreting their environmental relevance. Clear terminology supports consistent communication between laboratory work, field studies and technical documentation.

• Provides a common vocabulary for water pollution control and environmental assessment work.
• Systematises the naming of compounds accumulated in aquatic organisms.
• Clarifies the conceptual separation between halogenated and halogen-free compounds.
• Supports consistency in research, monitoring and technical reporting.