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CEN/TS 16980-1:2016

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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Photocatalysis - Continuous flow test methods - Part 1: Determination of the degradation of nitric oxide (NO) in the air by photocatalytic materials

Withdrawn date

09-03-2023

Published date

07-12-2016

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European foreword
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Principle
5 Interferences
6 Apparatus
7 Sample preparation
8 Measurement of concentrations
9 Calculation of photocatalytic
   degradation rate
10 Acceptability ranges of main test parameters
11 Test report
Annex A (informative) - Typical trend of NO,
        NO[2] and NO[x] concentrations during a
        photocatalytic test
Annex B (informative) - Example of test for the
        control of mass transfer conditions
Annex C (informative) - Typical Ohmic response
        of the fan
Bibliography

This standard describes a method for assessing the performance of photocatalytic inorganic materials contained in cement mortars and/or limes or ceramic-based matrices, paints or materials deposited as thin films or coatings on a variety of substrates for the photocatalytic abatement of nitric oxide in the gas phase. This method is not suitable for the assessment of samples to be applied with flow perpendicular to the surface or flow permeating the surface itself as polymeric and paper filters, honeycomb structures and suchlike.The performance for the photocatalytic sample under test is evaluated by measuring the degradation rate of nitric oxide (NO) using the method described herein. The photocatalytic abatement rate is calculated from the observed rate by eliminating the effects of mass transfer. The intrinsic photocatalytic abatement rate is an intrinsic property of the material tested and makes it possible to distinguish the photocatalytic activities of various products with an absolute scale defined with physical and engineering meaning.For the measurements and calculations described in this standard the concentration of nitrogen oxides (NOx) is defined as the stoichiometric sum of nitric oxide (NO) and nitrogen dioxide (NO2).Safety statementPersons using this document should be familiar with the normal laboratory practice, if applicable. This document cannot address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions.Environmental statementIt is understood that some of the material permitted in this standard may have negative environmental impact. As technological advantages lead to better alternatives for these materials, they will be eliminated from this standard to the extent possible.At the end of the test, the user of the standard will take care to carry out an appropriate disposal of the wastes, according to local regulation.

Committee
CEN/TC 386
DocumentType
Technical Specification
PublisherName
Comite Europeen de Normalisation
Status
Withdrawn
SupersededBy

UNI 10878 : 2000 EMISSION MEASUREMENT - DETERMINATION OF NITRIC OXIDE (NO AND NO[2]) IN CONVEYED GAS FLOWS - NON DISPERSIVE INFRARED (NDIR) AND ULTRAVIOLET (NDUV) SPECTROMETRY AND CHEMILUMINESCENCE METHODS
EN ISO/IEC 17043:2010 Conformity assessment - General requirements for proficiency testing (ISO/IEC 17043:2010)
EN ISO 9169:2006 Air quality - Definition and determination of performance characteristics of an automatic measuring system (ISO 9169:2006)
CEN/TS 16599:2014 Photocatalysis - Irradiation conditions for testing photocatalytic properties of semiconducting materials and the measurement of these conditions
UNI 11484 : 2013 PHOTOCATALYSIS - DETERMINATION OF PHOTOCATALYTIC ACTIVITY BY THE TANGENTIAL CONTINUOUS FLOW METHOD - NITRIC OXIDE ABATEMENT
ISO 7996:1985 Ambient air — Determination of the mass concentration of nitrogen oxides — Chemiluminescence method
ENV 13005 : DRAFT 1999 GUIDE TO THE EXPRESSION OF UNCERTAINTY IN MEASUREMENT
ISO 9169:2006 Air quality Definition and determination of performance characteristics of an automatic measuring system

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