ASTM F2576-2013 Standard Terminology Relating to Declarable Substances in Materials《料中相关可申报物质的标准术语》.pdf
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1、Designation: F2576 11F2576 13Standard Terminology Relating toDeclarable Substances in Materials1This standard is issued under the fixed designation F2576; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This terminology standard contains terms, definitions, descriptions of terms, nomenclature, and explanations of acronymsand symbols sp
3、ecifically associated with standards under the jurisdiction of ASTM International Committee F40 on DeclarableSubstances in Materials.1.2 This terminology may also be applicable to documents not under the jurisdiction of ASTM F40, in which case thisterminology may be referenced in those documents.2.
4、Referenced Documents2.1 ASTM Standards:2E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications2.2 Other References:ASTM Dictionary of Engineering Science available fromASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959
5、;ASTM Stock Number: DEF00.4 Standard ISO 472 is under the jurisdiction of ISO TC 61 on Plastics and is the direct responsibility of ISO TC 61 SC 1 on Terminology.5 ISO/IEC Guide 2 is under the jurisdiction of the ISO Technical Management Board.6 VIM is under the jurisdiction of the Joint Committee f
6、or Guides in Metrology (JCGM) and is the direct responsibility of JCGM-WG2.7 Currie, Lloyd A., Pure or (B)any other mineral or its derivatives determined by the Secretary of State to be financing conflict in the Democratic Republic of the Congo or anadjoining country.conflict mineral free article, n
7、an article not containing conflict minerals (or metals derived from conflict minerals) as definedin the United States by H. R. 4173 (Dodd-Frank Wall Street Reform and Consumer Protection Act), section 1502.de minimus limit, nfrom Latin de minimus meaning of no significant consequence; in regulatory
8、contexts, the maximumamount that evokes no legal consequence, that is, the maximum allowed amount.detection limit, nthe smallest net signal or the derived concentration that can be distinguished from the background signal orblank at a specified confidence level using a specified measurement process.
9、DISCUSSIONIUPAC definition per Lloyd A. Currie, Nomenclature in Evaluation of Analytical Methods Including Detection and Quantification Capabilities.intentionally added substance, na chemical element, compound or ion that is purposely included within or on a substance,material or object.percent by m
10、ass, nunits expressing the ratio of analyte mass to sample mass multiplied by 100.DISCUSSIONFor expression in SI units, the simple ratio of mass units (for example, mg/kg) is to be preferred over percent by mass. However, percent by mass (alsowritten as % mass or mass %) is commonly used. In additio
11、n, the expressions weight % and % by weight are often substituted as synonyms for themore correct % mass. Definition comes from the International Vocabulary of Basic and General Terms in Metrology (VIM).percent by weight, nsee percent by mass.quantification limit, nperformance characteristic that ma
12、rks the ability of a chemical measurement process to adequately“quantify” an analyte.DISCUSSIONThe ability to quantify is generally expressed in terms of the signal or analyte value that will produce estimates having a specified relative standarddeviation, commonly 10 %. IUPAC definition per Lloyd A
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