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GB/T 33042-2016Determination of lead, cadmium, chromium, mercury in the surface decorated layer of wooden floor (English PDF)

木质地板饰面层中铅、镉、铬、汞重金属元素含量测定

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 13, 2016

Implementation date

May 1, 2017

Scope

GB/T 33042-2016 is the English-translated version of 木质地板饰面层中铅、镉、铬、汞重金属元素含量测定.

GB/T 33042-2016 is the Chinese standard "Determination of lead, cadmium, chromium, mercury in the surface decorated layer of wooden floor".

Its scope clause reads: This standard specifies the use of atomic absorption spectrometry, atomic fluorescence spectrometer, inductively coupled plasma (ICP) atomic emission spectrometer for the determination of wood Method for the Content of Heavy Metal Elements in Lead, Cadmium, Chromium and Mercury in Texture Floor.

This standard applies to solid wood flooring, solid wood flooring, impregnated paper laminated wood flooring and other wood flooring decorative layer of heavy metal content Determination.

Its clauses include normative reference documents; method summary; reagents and materials.

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Document preview — GB/T 33042-2016

National Standard of the People's Republic of China

ICS: 79.060.01
Classification: B 70

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

1 Scope
2 normative reference documents
3 method summary
4 reagents and materials

1 Scope

This standard specifies the use of atomic absorption spectrometry, atomic fluorescence spectrometer, inductively coupled plasma (ICP) atomic emission spectrometer for the determination of wood

Method for the Content of Heavy Metal Elements in Lead, Cadmium, Chromium and Mercury in Texture Floor.

This standard applies to solid wood flooring, solid wood flooring, impregnated paper laminated wood flooring and other wood flooring decorative layer of heavy metal content

Determination.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 6682 Analytical laboratory water specifications and test methods

GB/T 21191 atomic fluorescence spectrometer

JJG015 Inductively Coupled Plasma Atomic Emission Spectrometer Verification Regulation

JJG023 Atomic Absorption Spectrometer Verification Regulation

JJG694 Atomic Absorption Spectrophotometer

3 method summary

3.1 Determination of heavy metal content

Samples by wet or microwave digestion, heavy metal elements transferred to the digestion solution, constant volume to a certain volume. Using flame atomic absorption spectrometry

Determination of lead, cadmium and chromium in the sample solution; determination of lead, cadmium, chromium and mercury in the sample solution by ICP atomic emission spectrometry;

Determination of Mercury in Sample Solution by Atomic Emission Spectrometry or Atomic Fluorescence Spectrometry.

3.2 Determination of soluble heavy metal elements

Under the condition of temperature and time, the soluble heavy metal elements in the sample were extracted with certain acidity hydrochloric acid. Using flame atomic absorption spectrometry

Determination of lead, cadmium and chromium in the sample solution; determination of lead, cadmium, chromium and mercury in the sample solution by ICP atomic emission spectrometry;

Determination of Mercury in Sample Solution by Atomic Emission Spectrometry or Atomic Fluorescence Spectrometry.

4 reagents and materials

4.1 Test water requirements

The water used to meet the requirements of GB/T 6682 above the secondary purity of distilled water or deionized water.

4.2 hydrochloric acid

Density rho = 1.19g/mL, excellent grade pure.

......
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

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