ISO 5120:2023 PDF

Name: ISO 5120:2023 — Soil quality — Determination of perchlorate in soil using liquid chromatography-tandem mass spectrometry (LC-MS/MS)
SKU: ISO 5120:2023
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Soil quality — Determination of perchlorate in soil using liquid chromatography-tandem mass spectrometry (LC-MS/MS)

Название (английский):

ISO 5120:2023

Soil quality — Determination of perchlorate in soil using liquid chromatography-tandem mass spectrometry (LC-MS/MS)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 4 июля 2023 г.
Издание:: ISO IS 5120 edition 1 version 1
ICS:: 13.080.10

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Описание (английский):

This document specifies a method for determining of perchlorate in soil and soil-like materials using liquid chromatography connected to a tandem mass spectrometry (LC-MS/MS). It defines pretreatment (including drying and sieving) of sample, extraction, clean-up, analysis using LC-MS/MS, and calculation of perchlorate content in dry soil. Under the conditions specified in this document, the limit of quantitation (LOQ) is approximately 4,6 μg/kg-dry soil.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 5120:2023 - Soil quality - Determination of perchlorate in soil using liquid chromatography-tandem mass spectrometry (LC‑MS/MS) specifies a trace analytical method for measuring perchlorate (ClO4−) in soil and soil‑like materials. The document covers sample pretreatment (drying, sieving), extraction, clean‑up, LC‑MS/MS analysis, calibration and calculation of perchlorate content on a dry‑weight basis. Under the conditions defined, the method achieves an approximate limit of quantitation (LOQ) of 4.6 μg/kg (dry soil).

Key topics and technical requirements

Scope and principle: Extraction of perchlorate from pretreated soil using distilled/deionized water, followed by LC‑MS/MS determination.

Sample pretreatment: Air‑drying and sieving in accordance with general soil sample preparation practices (see ISO 11464).

Extraction and separation:

Mechanical shaking and centrifugation to recover perchlorate into aqueous extract.
Filtration through a 0.2–0.45 μm membrane (e.g., cellulose acetate, hydrophilic polypropylene or polyethersulfone).

Clean‑up and interference control:

Spike with internal standard after filtration.
Use of cartridges or columns to remove interfering anions (sulfate, chloride, bicarbonate), cations or organic matter when necessary.

LC‑MS/MS analysis:

Reversed‑phase liquid chromatography with acetonitrile‑based mobile phase.
Isocratic or gradient elution depending on matrix characteristics.
Tandem mass spectrometric detection with internal standard calibration.

Calibration & calculation: Follow ISO 8466‑1 or ISO 8466‑2 for calibration strategy and performance estimation.

Apparatus & QC: Method lists required equipment (centrifuge, mechanical shaker, filtration devices, clean‑up cartridges, pipettes, LC‑MS/MS) and sets out quality control and reporting requirements.

Practical applications

Environmental laboratories performing trace‑level perchlorate analysis in soils.

Military site assessment and monitoring where perchlorate‑containing propellants or munitions may have contaminated soils.

Contaminated site investigations, remediation verification and risk assessment for groundwater/food‑chain exposure.

Regulatory agencies and consultants establishing or verifying compliance with local soil and water quality guidelines.

Research institutions studying perchlorate fate, transport and ecological or human health effects.

Who should use this standard

Analytical chemists and accredited testing laboratories specializing in environmental contaminants.

Environmental consultants, remediation contractors and project managers.

Government regulators and policy makers responsible for soil and groundwater quality.

Researchers developing or validating trace analytical methods for anions in complex matrices.

ISO 5120:2023 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Технические детали

SIST ISO 11464:2006

Soil quality -- Pretreatment of samples for physico-chemical analysis

BS ISO 8466-1:2021

Water quality. Calibration and evaluation of analytical methods - Linear calibration function

SIST ISO 8466-2:2004

Water quality -- Calibration and evaluation of analytical methods and estimation of performance characteristi…