ISO 22863-8:2021 PDF

Name: ISO 22863-8:2021 — Fireworks — Test methods for determination of specific chemical substances — Part 8: Arsenic content by hydride generation atomic fluorescence spectrometry
SKU: ISO 22863-8:2021
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Fireworks — Test methods for determination of specific chemical substances — Part 8: Arsenic content by hydride generation atomic fluorescence spectrometry

Название (английский):

ISO 22863-8:2021

Fireworks — Test methods for determination of specific chemical substances — Part 8: Arsenic content by hydride generation atomic fluorescence spectrometry

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 10 февраля 2021 г.
Издание:: ISO IS 22863 edition 1 version 1
ICS:: 71.100.30

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Описание (английский):

This document specifies the test method for the determination of the arsenic content in pyrotechnic compositions by hydride generation -atomic fluorescence spectrometry

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 22863-8:2021 specifies a laboratory test method for determining arsenic content in pyrotechnic compositions (fireworks) using hydride generation - atomic fluorescence spectrometry (HG-AFS). The standard describes sample pre‑treatment, reagents, apparatus, instrument settings, calculation procedures and reporting requirements to obtain quantitative arsenic results from digested fireworks samples.

Key topics and requirements

Scope: Quantitative determination of arsenic in pyrotechnic compositions by HG‑AFS.

Principle: Dissolve the sample by acidic digestion, reduce pentavalent arsenic to As(III) (thiourea/ascorbic acid), generate volatile AsH3 with potassium borohydride, transport by argon to an atomizer and measure fluorescence from an arsenic hollow‑cathode lamp. Fluorescence intensity is proportional to arsenic concentration.

Sample preparation: Typical sample mass 0.2 g (ground and sieved), digested with nitric and perchloric acids (heated to ~210 °C), evaporated and diluted to final volume with nitric acid and thiourea/ascorbic acid solution.

Reagents & standards: Perchloric acid, nitric acid, thiourea, ascorbic acid, potassium borohydride, NaOH, and calibrated arsenic standard solutions for a 0–10 µg/L working curve.

Instrumentation: Atomic fluorescence photometer with arsenic hollow‑cathode lamp and hydride generation accessory. Example operating conditions are provided (e.g., lamp current ≈ 60 mA, carrier gas ~500 mL/min, shielding flow ~1 000 mL/min).

Calibration & calculations: Standard-curve method for routine tests; Annex A provides a standard addition procedure to compensate matrix effects. Formulae are given to convert measured solution concentrations to mg/kg in the sample.

Performance & limits: Repeatability: absolute difference between two repeat determinations should not exceed 20% of the mean (improved to 10% using Annex A). For a 0.2 g sample diluted to 50 mL the standard reports LOD ≈ 0.01 mg/kg and LOQ ≈ 0.3 mg/kg.

Reporting: Test report must identify laboratory, sample description (per ISO 22863‑1), results, anomalies and reference ISO 22863‑8:2021.

Applications and users

Laboratories performing fireworks testing, quality control and compliance testing for manufacturers of pyrotechnic products.

Regulatory and market surveillance bodies checking arsenic limits in consumer fireworks and professional pyrotechnics.

Environmental and forensic labs analyzing pyrotechnic residues for safety investigations.

Certification and conformity assessment providers validating composition relative to national or regional restrictions.

Related standards

ISO 22863-1 - General requirements and terms for test methods in the ISO 22863 fireworks series. ISO 22863‑8 is part of the broader ISO 22863 series covering specific chemical determinations in pyrotechnics.

Keywords: ISO 22863-8, arsenic content, hydride generation atomic fluorescence spectrometry, HG‑AFS, fireworks testing, pyrotechnic compositions, arsenic analysis, standard addition, LOD, LOQ.

ISO 22863-8:2021 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

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