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Standard Practice for Solvent Extraction of Total Petroleum Hydrocarbons from Soils and Sediments Using Closed Vessel Microwave Heating
Automaticky preložený názov:
Štandardný postup extrakciou rozpúšťadlom z celkom ropných uhľovodíkov zo zeminy a sedimentov Použitie uzavretej nádobe mikrovlnným ohrevom
NORMA vydaná dňa 1.1.2016
Označenie normy: ASTM D5765-16
Dátum vydania normy: 1.1.2016
Kód tovaru: NS-626155
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy 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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