1.1本规程涵盖了一种超声波提取程序，用于从铅治理和改造（或相关）工作中感兴趣的环境样品中提取铅，用于分析目的。 1.2关注的环境基质包括干漆膜、沉降粉尘、土壤和空气颗粒。 1.3制备经过超声波提取的样品，以便随后通过实验室分析方法测定铅。 1.4本规程包括（如适用）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数值应视为标准。 1.6本规程无意解决与其使用相关的所有安全问题（如有）。本规程的使用者有责任在使用前制定适当的安全和健康规程，并确定监管限制的适用性。 ====意义和用途====== 与使用热板或微波消解浓酸的传统消解方法相比，使用稀硝酸的超声波提取是一种更简单、更容易从环境样品中提取铅的方法 (1), (3), (5), (6) . 因此，可以使用超声波提取代替更严格的强酸/高温消解方法（例如，见参考文献1） (1) 和试验方法E 1613 )，前提是使用指南E 1775中描述的公认标准证明性能 . 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 the standard. 1.6 This practice 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 practice to establish appropriate safety and health practices and determine the applicability of regulatory limitation prior to use. ====== Significance And Use ====== 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 (1), (3), (5), (6) . Hence, ultrasonic extraction may be used in lieu of the more rigorous strong acid/high temperature digestion methods (for example, see Ref (1) and Test Method E 1613 ), provided that the performance is demonstrated using accepted criteria as delineated in Guide E 1775 . In contrast with hot plate or microwave digestion techniques, ultrasonic extraction is field-portable, which allows for on-site sample analysis.