1.1This test method is intended for use in the determination of the time-weighted average mass concentration of hydrofluoric acid and particulate fluorides as inhalable aerosol in workplace air. The particulate fluorides are collected on a pre-filter and HF on an alkali-impregnated filter and analysed by ion chromatography. The method is also appropriate for measuring short term exposures. 1.2The method is not applicable to determination of particulate fluorides that are insoluble using the described sample preparation procedure. 1.3This test method assumes that air samples are collected using appropriate and applicable ASTM International standards for sampling of workplace air. 1.4The procedure is targeted for occupational and environmental hygiene monitoring purposes. 1.5No detailed operating instructions are provided because of differences among various makes and models of suitable instruments. Instead, the analyst shall follow the instructions provided by the manufacturer of the particular instrument. This standard does not address comparative accuracy of different devices or the precision between instruments of the same make and model. 1.6The values stated in SI units are to be regarded as the standard. 1.7The practice contains notes which are explanatory and not part of mandatory requirements of the standard. 1.8The 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.
Exposure to fluorides and hydrofluoric acid in workplace air can cause irritations of the skin, eyes and respiratory tract, and exposure limits for fluorides and hydrofluoric acid in air have been established to reduce exposure risks to potentially affected workers. Sampling and analytical methods for volatile inorganic acids are needed for exposure assessment and risk reduction purposes. The procedure is meant for use by occupational hygienists and industrial hygiene laboratories.
Keywordsexposure monitoring; industrial hygiene; inhalable aerosols; chemical analysis
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top