CEN/TS 17638:2021

Stationary source emissions - Manual method for the determination of the mass concentration of formaldehyde - Reference method

This document specifies the reference method for the determination of the concentration of formaldehyde in emissions from stationary sources. Waste gas samples are taken by absorption in water and subsequently analysed by spectrophotometry or HPLC. The method applies to waste gases in which the formaldehyde concentration is 2 mg/m3 to 60 mg/m3, on dry basis, at the reference conditions of 273 K and 101,3 kPa.
The specific components and the requirements for the measuring system are described. A number of performance characteristics with associated minimum performance criteria are specified for the measuring system.

Emissionen aus stationären Quellen - Manuelles Verfahren zur Bestimmung der Massenkonzentration von Formaldehyd - Referenzverfahren

Dieses Dokument legt das Referenzverfahren für die Bestimmung der Formaldehydkonzentration in Emissionen aus stationären Quellen fest. Abgasproben werden durch Absorption in Wasser genommen und anschließend mit Spektralphotometrie oder HPLC analysiert. Das Verfahren ist anwendbar für Abgase, bei denen die Formaldehydkonzentration, bezogen auf trockenes Abgas und bei den Referenzbedingungen 273 K und 101,3 kPa, zwischen 2 mg/m3 und 60 mg/m3 liegt.
Die einzelnen Komponenten und die Anforderungen an die Messeinrichtung werden beschrieben. Für die Messeinrichtung werden Leistungskenngrößen und zugehörige Mindestleistungskriterien angegeben.

Emissions de sources fixes – Méthode manuelle pour la détermination de la concentration massique en formaldéhyde – Méthode de référence

Emisije nepremičnih virov - Določevanje masne koncentracije formaldehida - Ročna metoda

General Information

• Status: Published
• Publication Date: 22-Jun-2021
• ICS: 13.040.40 - Stationary source emissions
• Technical Committee: CEN/TC 264 - Air quality
• Drafting Committee: CEN/TC 264/WG 40 - Measurement of formaldehyde emissions
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Dec-2024
• Completion Date: 02-Dec-2024
• Ref Project: SIST-TS CEN/TS 17638:2021 - Stationary source emissions - Determination of the mass concentration of formaldehyde - Manual method

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2021
Emisije nepremičnih virov - Določevanje masne koncentracije formaldehida -
Ročna metoda
Stationary source emissions - Determination of the mass concentration of formaldehyde
- Manual method
Emissionen aus stationären Quellen - Manuelles Verfahren zur Bestimmung der
Massenkonzentration von Formaldehyd - Referenzverfahren
Emissions de sources fixes - Détermination de la concentration massique en
formaldéhyde - Methode manuelle
Ta slovenski standard je istoveten z: CEN/TS 17638:2021
ICS:
13.040.40 Emisije nepremičnih virov Stationary source emissions
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17638
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
June 2021
TECHNISCHE SPEZIFIKATION
ICS 13.040.40
English Version
Stationary source emissions - Manual method for the
determination of the mass concentration of formaldehyde
- Reference method
Emissions de sources fixes - Méthode manuelle pour la Emissionen aus stationären Quellen - Manuelles
détermination de la concentration massique en Verfahren zur Bestimmung der Massenkonzentration
formaldéhyde - Méthode de référence von Formaldehyd - Referenzverfahren
This Technical Specification (CEN/TS) was approved by CEN on 16 May 2021 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17638:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations . 11
5 Principle . 11
6 Sampling strategy. 11
6.1 General . 11
6.2 Non-isokinetic sampling . 12
6.3 Isokinetic sampling with a side stream . 12
7 Sampling equipment . 13
7.1 Sampling probe . 13
7.1.1 Non-isokinetic sampling . 13
7.1.2 Isokinetic sampling . 13
7.1.3 Particle filter . 13
7.2 Absorbers . 14
7.3 Sampling pump . 16
7.4 Gas volume meter . 16
7.5 Filter housing . 17
7.6 Temperature controller . 17
7.7 Suction and volume flow meter . 17
7.8 Additional apparatus . 18
7.9 Additional apparatus for isokinetic sampling: Connection to the main line . 18
7.10 Materials . 18
7.11 Absorption solution. 18
8 Performance characteristics of the method . 18
8.1 General . 18
8.2 Performance characteristics and performance criteria of the sampling system . 19
8.3 Performance characteristics of the analysis . 20
8.3.1 Sources of uncertainty . 20
8.3.2 Performance criterion of analysis . 20
8.4 Establishment of the uncertainty budget . 21
9 Sampling procedure . 21
9.1 Preparation and installation of equipment . 21
9.1.1 Sampling location . 21
9.1.2 Measurement point(s) . 21
9.1.3 Preparation . 21
9.1.4 Checks . 22
9.1.5 Sampling . 22
9.1.6 Transport and storage of samples . 23
9.1.7 Other parameters to be recorded . 23
9.2 Validation of results . 23
9.2.1 Parameters depending on the stationary source . 23
9.2.2 Leak tests . 24
9.2.3 Field blank . 24
9.2.4 Other elements . 24
10 Analysis . 24
11 Calibration . 25
11.1 General . 25
11.2 Formaldehyde standard solution . 25
11.3 Formaldehyde calibration solution . 26
11.4 Determination of the calibration curve . 26
12 Expression of results . 27
13 Measurement report . 27
Annex A (normative) Analytical methods . 29
Annex B (informative) Measurement uncertainty . 37
Annex C (informative) Validation tests . 45
Bibliography . 46

European foreword
This document (CEN/TS 17638:2021) has been prepared by Technical Committee CEN/TC 264 “Air
quality”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
Formaldehyde is a carcinogenic pollutant that is generated in different industrial sectors, like energy
industries (combustion plants (e.g. for wood and gas), combustion engines (gas engines and turbines)),
chemical industry (e.g. formaldehyde production), food industry (e.g. smoking plants), wood industry
(e.g. production of wood-based panels or wood pellets) and thus contained in emissions of these
processes.
Currently, no European (EN) or International (ISO) Standard exists for the continuous or periodic
measurement of formaldehyde emissions, which are being addressed, e.g. by the European Commission
in its implementing decision 2015/2119 [1] establishing best available techniques (BAT) conclusions,
under Directive 2010/75/EU [2], for the production of wood-based panels.
Instead, different national methods for formaldehyde measurements are currently applied, e.g. US
EPA M316 [3], VDI 3862 Part 4 [4], VDI 3862 Part 6 [5], and FD X43-319 [6], all of them based on sampling
in aqueous absorption solutions. Several comparison studies have shown that the equivalence of these
methods is not ensured.
This measurement method is specified as a Technical Specification because currently no sufficient
validation data are available. A comprehensive validation programme has been developed and will be
carried out as
...