Emerging Compounds in Standard Reference Material 2585 Organic Contaminants in House Dust

Abstract

Standard Reference Materials (SRMs) are homogeneous, well-characterized materials that are used to validate measurements and improve the quality of analytical data (www.nist.gov/srm). Originally issued in 2005, SRM 2585 Organic Contaminants in House Dust was intended for use in evaluating analytical methods for legacy organic pollutants (including polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and chlorinated pesticides) in house dust and similar matrices. This SRM, while intended for analysis of legacy compounds, became an important matrix for the measurement of emerging organic chemicals (polyborminated diphenyl ethers, synthetic musks, per- and polyfluorinated compounds (PFAS), and newer use flame retardants) because interlaboratory studies of these compounds showed considerable disagreements. NIST has been measuring these emerging chemicals in SRM 2585 with the goal of assigning values on the Certificate of Analysis. In late 2017 NIST finished measurements and updated SRM 2585 with the addition of polycyclic musks, PFAS, and selected flame retardants. This presentation will highlight the methods for adding analytes to an existing SRM and provide values for emerging compounds in SRM 2585.