{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["006:55"], "contactPoint": {"fn": "Steven J. Choquette", "hasEmail": "mailto:srms@nist.gov"}, "description": "This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of hafnium.  A unit of SRM 3122 consists of 50 mL of an acidified aqueous solution prepared gravimetrically to contain a known mass fraction of hafnium in a high density polyethylene bottle sealed in an aluminized bag.  The solution contains approximately 8 % nitric acid (volume fraction) and approximately 1 % hydrofluoric acid (volume fraction), equivalent to amount of substance concentrations (molarities) of 1.3 mol/L and 0.3 mol/L, respectively. This data is public in the Certificate of Analysis for this material.", "identifier": "4765EE7CC5D5A396E0531A57068160031690", "keyword": ["Advanced Materials", "cations", "hafnium", "metals", "pure materials", "single element solutions", "spectrometry"], "landingPage": "https://www-s.nist.gov/srmors/view_detail.cfm?srm=3122", "language": ["en"], "license": "https://www.nist.gov/open/license", "modified": "2016-09-14 00:00:00", "programCode": ["006:052"], "publisher": {"@type": "org:Organization", "name": "National Institute of Standards and Technology"}, "theme": ["Standards:Reference materials"], "title": "SRM 3122 Hafnium (Hf) Standard Solution Lot No. 151120"}