GB/T 42349-2023Determination of antiviral activity of photocatalytic materials - Test method using bacteriophage Q-beta (English PDF)

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"

drafting:

This document is equivalent to ISO 18061:2014 "Fine Ceramics (Advanced Ceramics, Advanced Industrial Ceramics) Semiconductor Photocatalytic Materials for Disease Resistance

Determination of Toxic Activity Q-beta Phage Test Method":

The following minimal editorial changes have been made to this document:

---In order to coordinate with the existing standard system, the name of the standard was changed to "Determination of antiviral activity of photocatalytic materials Q-beta phage test

method":

Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:

1 Scope

This document describes the test method for the antiviral activity of surfaces containing photocatalysts or coated with photocatalysts or photocatalytic materials:

This method determines its antiviral activity by counting the reduction of Q-beta phage after ultraviolet light irradiation:

Note: In this test method, Q-beta bacteriophage is used as a substitute virus for influenza virus:

This document is applicable to different types of semiconductor photocatalytic materials used in building materials, and its basic shapes include sheet, block or flat

etc:, but does not include powders, granules or porous photocatalytic materials:

This document is applicable to the detection of photocatalytic materials with anti-virus properties, not applicable to anti-bacterial, anti-fungal, degradation of pollutants in water, self-

Detection of cleaning, anti-fog and air purification performance:

Quantities expressed in this document are in International System of Units (SI) units:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

this document:

ISO 10677 Fine ceramics (advanced ceramics, advanced technical ceramics) Ultraviolet light source for the detection of semiconductor photocatalytic materials [Finece-

ISO 27447:2009 Fine ceramics (advanced ceramics, advanced technical ceramics) Test method for antibacterial activity of semiconductor photocatalytic materials

ISO 80000-1 Quantities and units Part 1: General (Quantitiesandunits-Part 1:General)

3 Terms and Definitions

The following terms and definitions apply to this document:

3:1

Photocatalyst photocatalyst

Under the excitation of a certain light source, it can produce catalytic substances, including decomposition and removal of pollutants in air and water, deodorization, antibacterial, and self-activation:

Cleaning and anti-fog etc:

3:2

A material that contains or uses a photocatalyst and has photocatalytic properties: