1.1 Spray polyurethane foam (SPF) is a spray-applied plastic that can form a continuous insulation and air-sealing barrier on walls, roofs, around corners, and other surfaces. This test method describes an analytical procedure for identifying and quantifying the masses of individual vapor-phase organic compounds that are emitted from prepared specimens of SPF housed in emissions chambers and collected on sorbent sampling tubes during emissions testing. 1.2 This test method is primarily intended for measuring chemical emissions from specimens in environmental test chambers or micro-scale chambers; however, it could also be used for analysis of air samples collected in the field, that is, for monitoring emissions from SPF that has been applied in residential or commercial buildings. 1.3 This test method, when used in conjunction with Practice D7859 together with chamber-based standard practices for SPF emissions testing, will provide a standardized means of determining the levels of many individual, gas chromatograph (GC) compatible volatile and semi-volatile organic chemicals (VOCs and SVOCs) in the exhaust stream of the emissions test chamber/micro-scale chamber. The VOC and SVOC levels can be used to determine the emission rate from a unit quantity (usually surface area) of the sample material. 1.4 VOCs and SVOCs in the exhaust stream of an emissions test device are actively sampled onto thermal desorption tubes packed with a specific combination of sorbents. This involves direct sampling from the exhaust of micro-scale test chambers or pumped sampling from emission test chambers. (See Practice D6196 for a more general description of vapor collection using active sampling onto sorbent tubes.) The samples are analyzed by thermal desorption (TD) with gas chromatography and mass spectrometry detection (GC/MS). Flame ionization detection (FID) may be used as well as MS detection. NOTE 1FID may sometimes be used as an alternative detector for emissions screening or routine quality control depending upon the requirements of the specific materials emissions testing/certification protocol. 1.5 This test method can be used for the measurement of most GC-compatible organic vapors ranging from very volatile blowing agents to semi-volatile amine catalysts and organophosphate flame retardants. The user shall have knowledge of the product formulation to determine relevant target compounds, especially for proprietary formulations. Consult with the sample submitter or product manufacturer for formulation details. Properties other than a compounds vapor pressure such as affinity for the sorbent and reactivity may need to be taken into account when considering which compounds can be analyzed by this test method. This test method can be applied to analytes over a wide concentration range-typically 1-ug/m3 to 1-mg/m3 concentration of vapor in the exhaust air from the emission chamber or micro-chamber, depending on the sample volume. 1.6 This test method is not capable of detecting or quantifying all compounds that are potentially emitted from SPF such as aldehydes and diisocyanates. See the appropriate test practices/methods for determining other compounds that are not amenable to analysis by GC (for example, Test Method D5197 for the determination of aldehydes, OSHA 47, or applicable industry methods for the determination of diisocyanates). 1.7 Units--The values stated in SI units are to be regarded as the standard. No other units of measurement are included. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Currently, there are no standardized test methods that adequately address measuring the chemical emissions of SPF insulation products. This standard will address that need in conjunction with Work Item WK30960, Practice for Spraying, Sampling, Packaging, and Test Specimen Preparation of Spray Polyurethane Foam (SPF) Insulation Samples for Environmental Chamber Emissions Testing. The standard may be used by manufacturers, air quality laboratories, regulatory agencies, and so forth.
Keywordsspray polyurethane foam; SPF; environmental chamber; micro-scale chamber; emission; gas chromatography; indoor air; mass spectrometry; thermal desorption; SVOC; semi-volatile organic compounds; VOC; volatile organic compounds; amine catalysts; blowing agents
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development