ISO 10775:2013 PDF

Name: ISO 10775:2013 — Paper, board and pulps — Determination of cadmium content — Atomic absorption spectrometric method
SKU: ISO 10775:2013
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Paper, board and pulps — Determination of cadmium content — Atomic absorption spectrometric method

Название (английский):

ISO 10775:2013

Paper, board and pulps — Determination of cadmium content — Atomic absorption spectrometric method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 10
Дата публикации:: 29 июля 2013 г.
Издание:: ISO IS 10775 edition 2 version 1
ICS:: 85.040

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Описание (английский):

ISO 10775:2013 specifies a method for the determination of traces of cadmium in all types of paper, board and pulp, including products containing recycled fibre, that can be wet-combusted in nitric acid as specified in ISO 10775:2013. The lower limit of the determination depends on the equipment used and is normally about 10 μg/kg. Cadmium present in pigments and fillers that do not dissolve in nitric acid under the conditions of this test may not be determined quantitatively.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 10775:2013 specifies an atomic absorption spectrometric procedure for the determination of trace cadmium in all types of paper, board and pulp that can be wet-combusted in nitric acid. The method uses wet combustion (autoclave or microwave) followed by graphite-furnace AAS with a L'vov platform. Typical lower determination limits depend on instrumentation but are normally about 10 µg/kg. Cadmium locked in pigments or fillers that do not dissolve in the nitric-acid digestion may not be measured quantitatively.

Key Topics

Scope and limits: Covers paper, board and pulps including recycled-fibre products; notes incomplete dissolution for some pigments/fillers.

Sample preparation: Representative sampling (see ISO 186 / ISO 7213), moisture/dry-matter correction (ISO 287 / ISO 638), avoidance of contamination (use foil, non-metal tools).

Wet combustion:

Autoclave: PTFE vessels in a heating block at 160 ± 5 °C for 16 ± 1 h, 1 g test portions typical.
Microwave digestion: PTFE digestion vessels with safety valves; adjust test portion (e.g., max 0.3 g for 120 ml vessel).

Reagents and standards: Use high-purity reagents; concentrated HNO3 (c = 15 mol/l) and dilute HNO3 (0.15 mol/l). Cadmium calibration stocks and working solutions are prepared as specified.

Instrumental determination: Graphite-furnace AAS with background correction recommended. Use standard additions to control matrix effects or a validated calibration curve when matrix interferences are absent.

Matrix modifiers: Typical modifiers include palladium nitrate, ammonium dihydrogenphosphate, or magnesium nitrate; choice depends on lab performance and blank checks.

Quality control: Run blanks, duplicates, and reference materials; check matrix effects and adjust acid concentration of standards to match samples.

Applications

Routine laboratory testing for trace cadmium in paper, board and pulp for regulatory compliance, product safety and environmental monitoring.

Quality control in paper manufacturing, especially where recycled fibres are used and trace-metal monitoring is required.

Method validation and interlaboratory comparisons for laboratories using graphite-furnace AAS for trace-metal analysis.

Related Standards

ISO 186 - Paper and board: sampling to determine average quality

ISO 287 - Determination of moisture content (oven-drying)

ISO 638 - Determination of dry matter content (oven-drying)

ISO 7213 - Pulps: sampling for testing

Practical value: ISO 10775:2013 provides a reproducible, documented workflow (sample handling, wet combustion, calibration and AAS measurement) to obtain reliable cadmium results in paper-related matrices while highlighting limitations where cadmium is bound in insoluble pigments or fillers.

ISO 10775:2013 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

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SIST EN ISO 7213:2022

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BS EN ISO 28762:2010

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SIST EN ISO 638-1:2022

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