ISO 22863-11:2022 PDF

Fireworks — Test methods for determination of specific chemical substances — Part 11: Phosphorus content by inductively coupled plasma optical emission spectrometry (ICP-OES)

Название (английский):

ISO 22863-11:2022

Fireworks — Test methods for determination of specific chemical substances — Part 11: Phosphorus content by inductively coupled plasma optical emission spectrometry (ICP-OES)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 6
Дата публикации:: 13 июля 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 phosphorus content in firework compositions by inductively coupled plasma optical emission spectrometry (ICP-AES). Such test is applied to fireworks excluding Christmas crackers, party poppers, or snaps according to ISO 25947-5. The use of white phosphorus can lead to fireworks of hazardous chemical stability that can be detected by possible self-ignition during the thermal conditioning test according to ISO 25947-4:2017, 6.16 (75,0 ± 2,5 °C for 48 h).

Технические детали

Технический комитет: ISO/TC 264 - Fireworks
SKU: ISO 22863-11:2022

Abstract

Overview

ISO 22863-11:2022 specifies a validated laboratory method to determine phosphorus content in firework compositions using inductively coupled plasma optical emission spectrometry (ICP-OES / ICP-AES). The method applies to consumer and professional fireworks but excludes Christmas crackers, party poppers and snaps (see ISO 25947-5). It supports safety screening for hazardous chemical stability (e.g., risks from white phosphorus detected by thermal conditioning per ISO 25947-4:2017, 6.16).

Key procedural elements include microwave digestion (nitrification) of a 0.1 g sample, preparation of calibration standards, spectral measurement at phosphorus wavelengths, and calculation against a calibration curve.

Key Topics

Sample preparation: Weigh 0.1 g sample and perform microwave nitrification in nitric acid and hydrogen peroxide. The specified microwave program is: 1 min at 240 W, 3 min at 360 W, then 5 min at 600 W; dilute to 100 ml and filter.
Reagents: High-purity reagents and deionized water. Nitric acid (density 1.42 g/ml) and hydrogen peroxide of analytical purity. Working nitric acid is 1 part nitric acid + 19 parts water.
Standards & calibration: Prepare a 100 µg/ml phosphorus standard (KH2PO4 0.439 g in 1 000 ml) and dilute to obtain calibration points at 0.0, 4.0, 8.0, 16.0 and 20.0 µg/ml. Measure spectral intensity and construct a linear regression calibration curve (r > 0.999 required).
Analytical conditions: Typical analytical wavelengths are 213.618 nm or 178.287 nm. Instrument stability and calibration performance are required (short-term C

Overview

Key Topics

Sample preparation: Weigh 0.1 g sample and perform microwave nitrification in nitric acid and hydrogen peroxide. The specified microwave program is: 1 min at 240 W, 3 min at 360 W, then 5 min at 600 W; dilute to 100 ml and filter.
Reagents: High-purity reagents and deionized water. Nitric acid (density 1.42 g/ml) and hydrogen peroxide of analytical purity. Working nitric acid is 1 part nitric acid + 19 parts water.
Standards & calibration: Prepare a 100 µg/ml phosphorus standard (KH2PO4 0.439 g in 1 000 ml) and dilute to obtain calibration points at 0.0, 4.0, 8.0, 16.0 and 20.0 µg/ml. Measure spectral intensity and construct a linear regression calibration curve (r > 0.999 required).
Analytical conditions: Typical analytical wavelengths are 213.618 nm or 178.287 nm. Instrument stability and calibration performance are required (short-term C

ISO 22863-11:2022 PDF

Технические детали

Abstract

Overview

Key Topics

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Abstract

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