1.1 This test method describes a technique of quantifying various volatile organic compounds using a proton transfer reaction mass spectrometer (PTR-MS) that is based on either quadrupole (QMS) or time-of-flight (TOF) mass spectrometry. This method is based on the state-of-the-art TOF instrumentation; however, it should be noted that quadrupole-based systems may suffice in some applications. 1.2 Details of the PTR-MS theory and practical operation of the instrument in the field of vapor intrusion identification are discussed herein, along with considerations for Quality Assurance-Quality Control (QA/QC) protocols. In general, specifics on the operation and/or calibration of the instrument need to be identified by using the users manual of the individual PTR-MS vendor. 1.3 This standard may involve hazardous materials operations and equipment. This standard does not purport to address all of the safety issues associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicable regulatory limitations prior to use. 1.4 Terminology and Units The terminology in this standard follow the guidelines of ASTM D1356 and D653. Values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard. 1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026, 1.5.1 The procedures used to specify how data are collected/recorded or calculated in the standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the users objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering data. 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.
KeywordsVOC, Proton Transfer Reaction, Mass Spectrometry, vapor intrusion, real-time environmental monitoring, vadose zone gases, site characterization, air toxics, hazardous vapors, ambient atmospheric analysis.
This is a new standard developed to reflect the technology for field vapor intrusion.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
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