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GB/T 32433-2015Footwear—Chemical test method—Heavy metal content—Microwave plasma atomic emission spectroscopy (English PDF)

鞋类化学试验方法重金属含量的测定微波等离子体原子发射光谱法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2015

Implementation date

July 1, 2016

Scope

GB/T 32433-2015 is the English-translated version of 鞋类化学试验方法重金属含量的测定微波等离子体原子发射光谱法.

GB/T 32433-2015 specifies a chemical test method for determining the heavy metal content of footwear and footwear components by microwave plasma atomic emission spectrometry (MP-AES).

Clause 1 states that the method covers nine heavy metals, arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb) and antimony (Sb), that the standard applies to all footwear and footwear components, and that the limited substances in materials are the ones given in GB/T 29292.

Clause 2 cites GB/T 6682 on water for analytical laboratory use, GB/T 22049 on the environmental regulation and the testing standard environment for footwear and footwear components, and GB/T 29292 on the limited substances present in footwear and footwear components.

Under clause 3, Principle, the sample is digested in a microwave, the digestion fluid is made up to volume, the concentrations of the nine heavy metals are measured by microwave plasma atomic emission spectrometry, and their contents in the sample are calculated from those concentrations.

Clause 4, Reagents, requires analytical reagent grade chemicals and water meeting grade two of GB/T 6682 or of equivalent purity, and lists the reagents used, among them hydrogen peroxide at 30% and stock standard solutions of the nine heavy metals at a concentration of 100 µg/mL, which are to be stored and used strictly as the reference material certificate directs.

The draft on the source page breaks off inside 4.4, so the clauses that follow the reagents are not shown.

The Foreword notes that some of the content of the document may involve patents and that the body releasing it does not take responsibility for identifying them, and records that the standard was proposed by the China National Light Industry Council and administered by the National Standardization Technical Committee footwear (SAC/TC305).

The page gives ICS 61.060 and Chinese classification Y78 and estimates the text at 7,727 words. It was issued on 31 December 2015 and has applied since 1 July 2016.

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Document preview — GB/T 32433-2015

National Standard of the People's Republic of China

ICS: 61.060
Classification: Y 78

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

1 Scope

This standard specifies the test methods for footwear and footwear components --- Heavy Metal Content by microwave plasma atomic emission spectrometer (MP-AES) to nine heavy metals arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), mercury (Hg), Nickel (Ni), lead (Pb) and antimony (Sb) Determination of content.

This standard applies to all footwear and footwear components.

GB/T 29292 is given in limited edition containing material substance.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 6682 Analysis Laboratory use specifications and test methods

GB/T 22049 Footwear footwear and footwear components environmental regulation and testing standards environment

GB/T 29292 Footwear footwear and footwear components in the presence of limited substance

3 Principle

Samples after microwave digestion, the digestion fluid volume, measured nine kinds of heavy metals arsenic (As) by microwave plasma atomic emission spectrometry, cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), mercury (Hg), Nickel (Ni), lead (Pb) and antimony (Sb) the concentration of heavy metals in the sample is calculated content.

4 Reagents

4.1 General

Unless otherwise specified, use only analytical reagent. Water should be formulated in line with two water GB/T 6682 regulations or equivalent purity.

4.2 Nitrate

Pure class distinctions, a density of 1.4g/mL.

4.3 Hydrogen peroxide

Pure class (30%).

4.4 Heavy metal stock standard solution

Arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), mercury (Hg), Nickel (Ni), lead (Pb) and antimony (Sb) heavy metal stock standard solution Concentration was 100µg/mL, said heavy metal stock solution in strict accordance with the standard method of reference material on the certificate save and effective

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

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