ISO 22863-12:2022 PDF

Fireworks — Test methods for determination of specific chemical substances — Part 12: Picrates and picric acid by high performance liquid chromatography

Название (английский):

ISO 22863-12:2022

Fireworks — Test methods for determination of specific chemical substances — Part 12: Picrates and picric acid by high performance liquid chromatography

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 6
Дата публикации:: 13 сентября 2022 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 picrates and picric acid in firework compositions by high performance liquid chromatography.

Технические детали

Технический комитет: ISO/TC 264 - Fireworks
SKU: ISO 22863-12:2022

Abstract

Overview

ISO 22863-12:2022 specifies a validated test method for the determination of picrates and picric acid in fireworks and pyrotechnic compositions using high performance liquid chromatography (HPLC). The standard describes sample preparation, extraction, chromatographic conditions, qualitative identification by retention time, and quantitative determination with an external standard calibration curve. It is part of the ISO 22863 series developed by ISO/TC 264 (Fireworks).

Key topics and requirements

Scope: Determination of picric acid and picrates in firework compositions by HPLC.
Principle: Hot-water extraction of picrate anions followed by HPLC under acidic conditions; detection by UV (350 nm) and comparison to external picric acid standards.
Sample preparation:
- Sample mass: 0.5 g
- Extraction: 5 ml hot deionized water, ultrasonic mixing 40 min, centrifuge 2 min at 3 000 r/min; repeat three times and combine to 25 ml.
- Filtration through 0.45 µm organic Millipore device.
HPLC settings (specified):
- Column: C18 (4.6 × 250 mm, 5 µm) or equivalent
- Mobile phase: Methanol : 0.1% glacial acetic acid = 55:45 (v/v)
- Flow rate: 0.8 ml/min, injection volume 10 µl
- Detection wavelength: 350 nm
Calibration and quantification:
- External standard (picric acid, ≥99% purity) reserve solution (100 µg/ml), prepare diluted standards to build a linear response curve.
- Calculate sample concentration from peak area and standard curve; blank and parallel tests required.
Performance:
- Reported recovery: ~89.4%–96.4% in the 0.5–20 mg/kg range
- Relative standard deviation (RSD)

Overview

Key topics and requirements

Scope: Determination of picric acid and picrates in firework compositions by HPLC.
Principle: Hot-water extraction of picrate anions followed by HPLC under acidic conditions; detection by UV (350 nm) and comparison to external picric acid standards.
Sample preparation:
- Sample mass: 0.5 g
- Extraction: 5 ml hot deionized water, ultrasonic mixing 40 min, centrifuge 2 min at 3 000 r/min; repeat three times and combine to 25 ml.
- Filtration through 0.45 µm organic Millipore device.
HPLC settings (specified):
- Column: C18 (4.6 × 250 mm, 5 µm) or equivalent
- Mobile phase: Methanol : 0.1% glacial acetic acid = 55:45 (v/v)
- Flow rate: 0.8 ml/min, injection volume 10 µl
- Detection wavelength: 350 nm
Calibration and quantification:
- External standard (picric acid, ≥99% purity) reserve solution (100 µg/ml), prepare diluted standards to build a linear response curve.
- Calculate sample concentration from peak area and standard curve; blank and parallel tests required.
Performance:
- Reported recovery: ~89.4%–96.4% in the 0.5–20 mg/kg range
- Relative standard deviation (RSD)

ISO 22863-12:2022 PDF

Технические детали

Abstract

Overview

Key topics and requirements

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Abstract

Overview

Key topics and requirements

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