1. Scope

1.1 This test method covers a procedure for sampling and determining concentrations of non-methane organic compounds (NMOC) in ambient, indoor, or workplace atmospheres.

1.2 The test method describes the collection of cumulative samples in passivated stainless steel canisters and subsequent laboratory analysis.

1.2.1 This test method describes a procedure for sampling in canisters at final pressures above atmospheric pressure (referred to as pressurized sampling).

1.3 This test method employs a cryogenic trapping procedure for concentration of the NMOC prior to analysis.

1.4 This test method describes the determination of the NMOC by the simple flame ionization detector (FID), without the gas chromatographic columns and complex procedures necessary for species separation.

1.5 The range of this test method is from 20 to 10 000 ppbC (1,2) . See 13.4 for procedures for lowering the range.

1.6 The test method may yield less accurate results for some halogenated or oxygenated hydrocarbons emitted from nearby sources of industrial air pollutants. This is especially true if there are high concentrations of chlorocarbons or chlorofluorocarbons present.

1.7 The values stated in SI units are regarded as the standard.

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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D1193 Specification for Reagent Water

D1356 Terminology Relating to Sampling and Analysis of Atmospheres

D1357 Practice for Planning the Sampling of the Ambient Atmosphere

D5466 Test Method for Determination of Volatile Organic Chemicals in Atmospheres (Canister Sampling Methodology)

Keywords

ambient atmospheres; analysis; atmospheres; canister sampling; cryogenic sampling; flame ionization detection; indoor atmospheres; non-methane hydrocarbons; sampling; workplace atmospheres; Ambient air/atmospheric analysis; Canister sampling methodology; Cryogenic sampling; Flame ionization detectors (FID); Indoor air analysis; NMOC (non-methane organic compounds); Organic compounds--atmospheric; Sampling air/atmospheric materials/applications; Workplace air/atmospheres;

ICS Code

ICS Number Code 13.040.01 (Air quality in general); 71.040.50 (Physicochemical methods of analysis)

DOI: 10.1520/D5953M-96R01

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