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Standard Practice for Solvent Extraction of Total Petroleum Hydrocarbons from Soils and Sediments Using Closed Vessel Microwave Heating
Automatische name übersetzung:
Standard Praxis für die Lösungsmittelextraktion von Total Petroleum Kohlenwasserstoffe aus Böden und Sedimenten Mit geschlossenen Gefäß Mikrowelle Heizung
NORM herausgegeben am 1.1.2016
Bezeichnung normen: ASTM D5765-16
Ausgabedatum normen: 1.1.2016
SKU: NS-626155
Zahl der Seiten: 3
Gewicht ca.: 9 g (0.02 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
extraction, microwave, solvent, total petroleum hydrocarbon (TPH), vessel,, ICS Number Code 13.080.10 (Chemical characteristics of soil)
Significance and Use | ||||||||||||
5.1 Solvent extraction of soils and sediments can provide information on the availability of petroleum hydrocarbons to leaching, water quality changes, or other site conditions. 5.2 Rapid heating, in combination with temperatures in excess of the atmospheric boiling point of acetone/hexane, reduces sample preparation or extraction times. 5.3 Reduced amounts of solvents are required and solvent loss due to boiling and evaporation are eliminated by use of closed extraction vessels. |
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1. Scope | ||||||||||||
1.1 This practice covers the solvent extraction of total petroleum hydrocarbon (TPH) from soils and sediments, using closed vessel microwave heating, for subsequent determination by gravimetric or gas chromatographic techniques. 1.2 This practice is recommended only for solid samples that can pass through a ten mesh screen (approximately 2 mm openings). 1.3 The solvent extract obtained by this practice may be analyzed for total or specific nonvolatile and semivolatile petroleum hydrocarbons but may require sample clean-up procedures prior to specific compound analysis. 1.4 This practice is limited to solvents that are recommended for use in microwave solvent extraction systems. 1.5 The values stated in SI units are to be regarded as standard. 1.5.1 Exception—The inch-pound values given for units of pressure are to be regarded as standard; SI unit conversions are shown in parentheses. 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. Specific hazard statements are given in Section 9. |
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2. Referenced Documents | ||||||||||||
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