ASTM E1979-2017 后續鉛測定用涂料、灰塵、土壤和空氣試樣的超聲波提取規程 Standard Practice for Ultrasonic Extraction of Paint,Dust,Soil,and Air Samples for Subsequent Determination of Lead

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 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.