【国外标准】 Standard Practice for Preparation of Dried Paint Samples by Hotplate or Microwave Digestion for Subsequent Lead Analysis

5.1 Paint in buildings and related structures needs to be monitored for lead content in order to determine the potential lead hazard. Hence, effective and efficient methods are required for the preparation of paint samples that may contain lead.5.2 This practice may be used for the digestion of paint samples that are collected during various lead-hazard control and risk assessment activities associated with lead abatement in and around buildings and related structures. This practice is also suitable for the digestion of paint samples collected from locations such as commercial buildings.5.3 This practice may be used to prepare samples that have been obtained in order to ensure compliance with laws that govern lead content in paints.5.4 This practice may be used to prepare samples that have been collected for risk assessment purposes.5.5 This practice is intended for use with paint samples that are prepared for subsequent analysis by quantitative analytical methods.1.1 This practice covers the sample preparation procedures for paint samples that are collected during the assessment, management or control of lead hazards.1.2 This practice describes the digestion procedures using a hot plate or microwave oven or apparatus for paint samples that are to be analyzed for lead content.1.3 This practice covers the general considerations for quantitative sample extraction for total recoverable lead in dried paint samples (either bulk paint or paint powder) using hot plate or microwave heating techniques, or both.1.4 This practice contains notes that are explanatory and not part of the mandatory requirements of the standard.1.5 This practice is based on NIOSH Methods 7082 and 7105, and on an EPA standard operating procedure for lead in paint.1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 6.1.2, 6.1.2.1, 6.1.2.2, 6.3.2.4, 8.2.1, and 8.2.2.1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.