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Standard Test Method for Ultraviolet Absorbance and Absorptivity of Petroleum Products
Automaticky přeložený název:
Standardní zkušební metoda pro ultrafialovém absorbance a nasákavostí ropných produktů
NORMA vydána dne 1.6.2012
Označení normy: ASTM D2008-12
Poznámka: NEPLATNÁ
Datum vydání normy: 1.6.2012
Kód zboží: NS-19018
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
petroleum products, ultraviolet absorbance, ultraviolet absorptivity, ultraviolet spectroscopy, ICS Number Code 75.080 (Petroleum products in general)
Significance and Use | ||||||||
5.1 The absorbance of liquids and the absorptivity of liquid and solids at specified wavelengths in the ultraviolet are useful in characterizing petroleum products. |
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1. Scope | ||||||||
1.1 This test method covers the measurement of the ultraviolet absorption of a variety of petroleum products. It covers the absorbance of liquids or the absorptivity of liquids and solids, or both, at wavelengths in the region from 220 to 400 nm of the spectrum. 1.2 The use of this test method implies that the conditions of measurement—wavelength, solvent (if any), sample path length, and sample concentration—are specified by reference to one of the examples of the application of this test method in the annexes or by a statement of other conditions of measurement. 1.3 Examples of the application of this test method are the absorptivity of refined petroleum wax, and the absorptivity of USP petrolatum. 1.4 The values stated in SI units are to be regarded as the standard. The values stated in Fahrenheit, feet, and inches, indicated in parentheses, are for information only. 1.5 Warning—Mercury has been designated by EPA and many state agencies as a hazardous material that can cause central nervous system, kidney, and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury-containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website (http://www.epa.gov/mercury/faq.htm) for additional information. Users should be aware that selling mercury or mercury-containing products, or both, in your state may be prohibited by state law. 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 and health practices and determine
the applicability of regulatory limitations prior to use.
Standard Practices for General Techniques
of Ultraviolet-Visible Quantitative Analysis Standard Specification for Reagent
Water Standard Terminology Relating to
Molecular Spectroscopy Standard Practice for Describing and
Measuring Performance of Ultraviolet and Visible
Spectrophotometers |
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