SIST ISO 16772:2019 PDF

Name: SIST ISO 16772:2019 — Soil quality - Determination of mercury in aqua regia soil extracts with cold-vapour atomic absorption spectrometry or cold-vapour atomic fluorescence spectrometry
SKU: SIST ISO 16772:2019
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Soil quality - Determination of mercury in aqua regia soil extracts with cold-vapour atomic absorption spectrometry or cold-vapour atomic fluorescence spectrometry

Название (английский):

SIST ISO 16772:2019

Soil quality - Determination of mercury in aqua regia soil extracts with cold-vapour atomic absorption spectrometry or cold-vapour atomic fluorescence spectrometry

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 5 сентября 2019 г.
ICS:: 13.080.10
Технический комитет:: KAT - Soil quality

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Описание (английский):

ISO 16772:2004 specifies a method for the determination of mercury in an aqua regia extract of soil, obtained in accordance with ISO 11464 and ISO 11466, using cold-vapour atomic absorption spectrometry or cold-vapour atomic fluorescence spectrometry. The limit of determination of the method is at least 0,1 mg/kg.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 16772:2004 specifies a laboratory method for the determination of mercury (Hg) in soil using an aqua regia extract and measurement by cold‑vapour atomic absorption spectrometry (CV‑AAS) or cold‑vapour atomic fluorescence spectrometry (CV‑AFS). The procedure applies to soil extracts prepared in accordance with ISO 11464 and ISO 11466 and gives a limit of determination of at least 0.1 mg/kg (dry matter). The standard includes safety warnings (mercury is highly toxic) and quality control expectations for trace analysis.

Key Topics and Requirements

Scope: Measurement of Hg in aqua regia soil extracts using CV‑AAS or CV‑AFS; LOD ≥ 0.1 mg/kg.

Analytical principle: Mercury in solution is reduced to elemental vapour (tin(II) chloride specified) and measured either by absorbance at 253.7 nm (CV‑AAS) or by atomic fluorescence (CV‑AFS).

Reagents & gases: aqua regia, nitric and hydrochloric acids, tin(II) chloride as reductant, certified mercury standards, and high‑purity argon or nitrogen (argon recommended for AFS).

Apparatus: properly equipped AAS or AFS, cold‑vapour generator (manual batch or automated FIAS), appropriate cells (heated silica cell for AAS), and clean labware for trace analysis.

Calibration & blanks: multi‑point calibration from prepared mercury standards; routine blank determinations and diluted aqua regia matrix matching.

Matrix checks: mandatory use of the standard addition method at least once per soil type to detect matrix interferences; switch to standard additions if calibration and addition results differ.

Quality control: use of certified reference materials (CRM), control charts, and documented in‑house reference materials to ensure traceability and stability.

Safety: strict handling procedures to avoid mercury exposure and environmental release.

Applications

Environmental monitoring of mercury contamination in soils (industrial sites, mining, agricultural inputs).

Baseline surveys and post‑remediation verification for contaminated land projects.

Regulatory compliance testing where soil mercury concentrations must be quantified.

Routine laboratory testing in environmental and geochemical laboratories using CV‑AAS or CV‑AFS.

Related Standards

ISO 11466 - Extraction of trace elements soluble in aqua regia

ISO 11464 - Pretreatment of soil samples for physico‑chemical analysis

ISO 11465 - Determination of dry matter and water content (gravimetric)

ISO 3696 - Water for analytical laboratory use

Keywords: ISO 16772, mercury determination, soil quality, aqua regia extract, cold‑vapour AAS, CV‑AFS, CV‑AAS, tin(II) chloride, mercury in soil, environmental monitoring.

SIST ISO 16772:2019 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications

Who Uses This Standard

Related Standards

Технические детали

ISO 16772:2004

Soil quality — Determination of mercury in aqua regia soil extracts with cold-vapour atomic spectrometry or c…

SIST ISO 11464:2006

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

SIST ISO 11466:1996

Soil quality -- Extraction of trace elements soluble in aqua regia

SIST EN ISO 11465:2026

Sludge and solid environmental matrices - Determination of dry residue or water content and calculation of th…

SIST EN ISO 3696:1998

Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)

BS ISO 16772:2004

Soil quality. Determination of mercury in aqua regia soil extracts with cold-vapour atomic spectrometry or co…