Standard Guide for Measurement Techniques for Formaldehyde in Air

Importancia y uso:

5.1 The objective of this guide is to provide the user with an information base on commercially available instruments and technologies that can be used to measure indoor air formaldehyde concentrations.

5.2 This guide is intended as a repository for formaldehyde measurement technologies that other approved ASTM methods can reference to meet ASTM indoor air formaldehyde quantification needs.

5.3 This guide does not discuss the equivalency of the technologies presented. Each technology may have positive or negative interferences that are unique to that technology. When using a new method, equivalence with old methods should be demonstrated for each matrix, measuring environment and media (that is, each type of wood for formaldehyde emission testing in chamber environments). This is especially true when the method is intended to generate regulatory compliance data. Demonstrating equivalence or compliance, or both, is beyond the scope of this method. For guidance equivalence see references such as 40 CFR § 136.6 and CEN Guide to the Demonstration of Equivalence of Ambient Air Monitoring Methods (1).5

Subcomité:

D22.05

Volúmen:

11.07

Número ICS:

13.040.01 (Air quality in general)

Palabras clave:

advantages; cavity ringdown; chemical ionization mass spectrometer; chromotropic acid; derivatization (DNPH, 2,4-Dinitrophenylhydrazine); derivatization (Hantzsch reaction); electrochemical cell; formaldehyde; FTIR spectrometer with optical filter; laser absorption spectrometer; limitations; photoacoustic; pre-concentration and thermal desorption; quantification;