GB/T 42985-2023Method for determining the bio-based content of bio-based foam (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document describes a method for the detection of biobased content in biomass-based foam materials.

This document is applicable to the testing of biomass-based foam materials.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 6682 Specifications and test methods for water used in analytical laboratories

3 Terms and definitions

The following terms and definitions apply to this document.

4 Principles

Under certain conditions, the organic carbon in the biomass-based foam sample is converted into carbon dioxide, and then the generated carbon dioxide is converted into ethyl alcohol.

Alkyne is then converted into benzene, a scintillator is added, and the 14C radioactive activity is measured using the liquid scintillation method, and is compared with the 14C radioactive activity of the reference material. The degree is compared to calculate the biobased content.

5 Reagents or materials

5.1 Deionized water or double distilled water, GB/T 6682, level three.