Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Method 1664: N-Hexane Extractable Material (HEM) and Silica Gel Treated N-Hexane Extractable Material (SGT-HEM) by Extraction and Gravimetry (Oil and Grease and Total Petroleum Hydrocarbons), January 1995.
CORP Author DynCorp Viar, Inc., Reston, VA. Environmental Services Div.;Environmental Protection Agency, Washington, DC. Engineering and Analysis Div.
Publisher Jan 95
Year Published 1995
Report Number EPA/821/B-94/004A; EPA-68-C3-0337;
Stock Number PB95-196648
Additional Subjects Water pollution monitoring ; Hexanes ; Extraction ; Gravimetric analysis ; Chemical analysis ; Test methods ; Silica gel ; Quality control ; Pollution regulations ; Oils ; Crude oil ; Petroleum products ; Greases ; Clean Air Act ; EPA Method 1664 ; HEM ; SGT-HEM
Library Call Number Additional Info Location Last
NTIS  PB95-196648 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/02/1995
Collation 95p
Method 1664 was developed by the United States Environmental Protection Agency Office of Science and Technology to replace previously used gravimetric procedures that employed Freon-113, a Class I CFC, as the extraction solvent for the determination of oil and grease and petroleum hydrocarbons. Method 1664 is a performance-based method applicable to aqueous matrices that requires the use of n-hexane as the extraction solvent and gravimetry as the determinative technique. In addition, quality control (QC) procedures designed to monitor precision and accuracy have been incorporated into Method 1664.