SIST EN ISO 13165-1:2024 PDF

Name: SIST EN ISO 13165-1:2024 — Water quality - Radium-226 - Part 1: Test method using liquid scintillation counting (ISO 13165-1:2022)
SKU: SIST EN ISO 13165-1:2024
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Water quality - Radium-226 - Part 1: Test method using liquid scintillation counting (ISO 13165-1:2022)

Название (английский):

SIST EN ISO 13165-1:2024

Water quality - Radium-226 - Part 1: Test method using liquid scintillation counting (ISO 13165-1:2022)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 24
Дата публикации:: 23 апреля 2024 г.
ICS:: 13.060.60
Технический комитет:: KAV - Water quality

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Описание (английский):

This document specifies the determination of radium-226 (226Ra) activity concentration in non-saline water samples by extraction of its daughter radon-222 (222Rn) and its measurement using liquid scintillation analysis. The test method described in this document, using currently available scintillation counters, has a detection limit of approximately 50 mBq·l−1. This method is not applicable to the measurement of other radium isotopes.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты SIST

Overview

EN ISO 13165-1:2024 (identical to ISO 13165-1:2022) specifies a standardized test method using liquid scintillation counting (LSC) for determination of Radium-226 (Ra-226) activity concentration in water. Published by CEN and prepared by ISO/TC 147 “Water quality”, this European adoption supersedes EN ISO 13165-1:2020 and is intended for routine and regulatory water quality and radioactivity measurements.

Key topics and technical requirements

The standard covers the principles and practical requirements for LSC-based measurement of Ra‑226, including:

Principle of measurement using liquid scintillation counting for Ra‑226.

Reagents and equipment needed for sample preparation and LSC analysis.

Sampling guidance for surface, groundwater, seawater and drinking water.

Instrument set-up and calibration, including preparation of calibration sources and optimization of counting conditions.

Detection efficiency assessment and blank sample preparation/measurement.

Procedures: direct counting, thermal preconcentration, sample preparation and measurement steps.

Quality control and validation: calibration, blanks, control samples, and documented validation data.

Expression of results: calculation of massic activity, estimation of standard uncertainty, decision threshold and detection limit, and reporting of coverage intervals.

Interference control to identify and mitigate radionuclide or chemical interferences.

Test report content and reporting requirements. These topics align with ISO/IEC Guide 98-3 principles for uncertainty and reference international guidance (e.g., WHO).

Applications

EN ISO 13165-1:2024 is applicable where accurate measurement of Ra‑226 in water is required:

Drinking water monitoring to assess compliance with guidance levels (WHO guidance level for Ra in drinking water is cited in the standard).

Environmental surveillance of surface waters, groundwaters and seawater.

Effluent control from industrial or mining activities involving naturally occurring radioactive materials (NORM).

Emergency response monitoring after radiological incidents.

Laboratory validation and method harmonization for routine radioactivity testing using liquid scintillation counting.

Who should use this standard

Analytical laboratories performing radioactivity measurements and accreditation bodies.

Water utilities and public health authorities responsible for drinking water safety.

Environmental monitoring agencies and consultants.

Nuclear and industrial facilities managing radioactive effluents.

Researchers and developers validating LSC methods for radionuclide analysis.

Related standards

ISO 13165 series (other parts for complementary methods or radionuclides)

ISO/IEC Guide 98-3 (evaluation of measurement uncertainty)

Relevant WHO and national drinking water radioactivity guidance documents

Using EN ISO 13165-1:2024 helps ensure consistent, validated, and reportable results for Radium‑226 in water using LSC, supporting regulatory compliance and public health protection.

SIST EN ISO 13165-1:2024 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications

Who should use this standard

Related standards

Технические детали

ISO 13165-1:2022

Water quality — Radium-226 — Part 1: Test method using liquid scintillation counting

BS EN ISO 13165-3:2024

Water quality. Radium-226. Test method using coprecipitation and gamma-ray spectrometry.

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