1.1 本规程涵盖了从铅减排和翻新（或相关）工作中感兴趣的环境样品中提取铅的超声波提取程序，用于分析目的。 1.2 关注的环境基质包括干漆膜、沉降的灰尘、土壤和空气颗粒。 1.3 制备经过超声提取的样品，用于随后通过实验室分析方法测定铅。 1.4 在适用的情况下，本规程包括超声提取前样品均匀化和称重程序的说明。 1.5 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 使用稀硝酸的超声波提取是从环境样品中提取铅的一种更简单、更容易的方法，而传统的消解方法采用热板或微波消解浓缩酸 ( 3. ), ( 5. ), ( 7. ), ( 8. ) 因此，超声提取可以代替更严格的强酸/高温消化方法（例如，参见参考文献 ( 3. ) 和测试方法 1613年 )，前提是使用指南中规定的可接受标准证明性能 1775年 . 5.2 与热板或微波消解技术相比，超声波提取是现场便携式的，可以进行现场样品分析。

1.1 This practice covers an ultrasonic extraction procedure for the extraction of lead from environmental samples of interest in lead abatement and renovation (or related) work, for analytical purposes. 1.2 Environmental matrices of concern include dry paint films, settled dusts, soils, and air particulates. 1.3 Samples subjected to ultrasonic extraction are prepared for subsequent determination of lead by laboratory analytical methods. 1.4 This practice includes, where applicable, descriptions of procedures for sample homogenization and weighing prior to ultrasonic extraction. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. 1.7 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. ====== Significance And Use ====== 5.1 Ultrasonic extraction using dilute nitric acid is a simpler and easier method for extracting lead from environmental samples than are traditional digestion methods that employ hot plate or microwave digestion with concentrated acids ( 3 ), ( 5 ), ( 7 ), ( 8 ) . Hence, ultrasonic extraction may be used in lieu of the more rigorous strong acid/high temperature digestion methods (for example, see Ref ( 3 ) and Test Method E1613 ), provided that the performance is demonstrated using accepted criteria as delineated in Guide E1775 . 5.2 In contrast with hot plate or microwave digestion techniques, ultrasonic extraction is field-portable, which allows for on-site sample analysis.