BSI PD CEN/TS 17638:2021

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

Published By	Publication Date	Number of Pages
BSI	2021	50

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Categories: 13.040.40 - Stationary source emissions, BSI

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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.

PDF Catalog

PDF Pages	PDF Title
2	undefined
8	1 Scope 2 Normative references 3 Terms and definitions
13	4 Symbols and abbreviations 5 Principle 6 Sampling strategy 6.1 General
14	6.2 Non-isokinetic sampling 6.3 Isokinetic sampling with a side stream
15	7 Sampling equipment 7.1 Sampling probe 7.1.1 Non-isokinetic sampling 7.1.2 Isokinetic sampling 7.1.3 Particle filter
16	7.2 Absorbers
18	7.3 Sampling pump 7.4 Gas volume meter
19	7.5 Filter housing 7.6 Temperature controller 7.7 Suction and volume flow meter
20	7.8 Additional apparatus 7.9 Additional apparatus for isokinetic sampling: Connection to the main line 7.10 Materials 7.11 Absorption solution 8 Performance characteristics of the method 8.1 General
21	8.2 Performance characteristics and performance criteria of the sampling system
22	8.3 Performance characteristics of the analysis 8.3.1 Sources of uncertainty 8.3.2 Performance criterion of analysis
23	8.4 Establishment of the uncertainty budget 9 Sampling procedure 9.1 Preparation and installation of equipment 9.1.1 Sampling location 9.1.2 Measurement point(s) 9.1.3 Preparation
24	9.1.4 Checks 9.1.5 Sampling
25	9.1.6 Transport and storage of samples 9.1.7 Other parameters to be recorded 9.2 Validation of results 9.2.1 Parameters depending on the stationary source
26	9.2.2 Leak tests 9.2.3 Field blank 9.2.4 Other elements 10 Analysis
27	11 Calibration 11.1 General 11.2 Formaldehyde standard solution
28	11.3 Formaldehyde calibration solution 11.4 Determination of the calibration curve
29	12 Expression of results 13 Measurement report
31	Annex A (normative)Analytical methods A.1 Method A (AHMT method) A.1.1 Principle A.1.2 Apparatus, reagents and solutions A.1.2.1 Apparatus A.1.2.2 Reagents and solutions
32	A.1.3 Procedure A.1.4 Calculation of the mass of absorbed formaldehyde in the wash bottle A.2 Method B (Pararosaniline method) A.2.1 Principle A.2.2 Apparatus, reagents and solutions A.2.2.1 Apparatus
33	A.2.2.2 Reagents A.2.3 Procedure A.2.4 Calculation of the mass of absorbed formaldehyde in the wash bottle A.3 Method C (acetylacetone method) A.3.1 Principle
34	A.3.2 Apparatus, reagents and solutions A.3.2.1 Apparatus A.3.2.2 Reagents and solutions A.3.3 Procedure A.3.4 Calculation of the mass of formaldehyde absorbed in the wash bottles
35	A.4 Method D (DNPH method) A.4.1 Principle A.4.2 Apparatus, reagents and solutions A.4.2.1 Apparatus A.4.2.2 Reagents and solutions A.4.3 Procedure
39	Annex B (informative)Measurement uncertainty B.1 General B.2 Elements required for the uncertainty determinations B.3 Example of an uncertainty calculation B.3.1 Specific conditions in the field
41	B.3.2 Performance characteristics of the method
42	B.3.3 Model equation and application of rule of uncertainty propagation B.3.3.1 Concentration of formaldehyde B.3.3.2 Calculation of the combined uncertainty of Cm and Vstd
43	B.3.3.3 Calculation of sensitivity coefficients B.3.3.4 Results of the standard uncertainties calculations
44	B.3.4 Estimation of the combined uncertainty
45	B.3.5 Calculation of the expanded uncertainty B.3.6 Uncertainty associated to the mass concentration of formaldehyde at O2 reference concentration
47	Annex C (informative)Validation tests