Skip to main content

Method 1664A – Implementation and Use

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Freon had been used exclusively as the extraction solvent for oil and grease analysis for decades. However, Freon is an ozone-depleting chemical. To protect the ozone layer, EPA developed method 1664A, which substituted n-Hexane as the extraction solvent. The HRSD CEL started to implement method 1664A in 2000 and completely switched by early 2006. Automated SPE has yielded quality results on a consistent basis. Only two OPRs failed for SGT-HEM and one OPR failed for HEM. 87% of matrix spikes were within the acceptance criteria. 1664A implementation studies indicated that significant amount of HEM and SGT-HEM loss with Freon procedure was through both extraction and evaporation processes. A historical data comparison between 1664A and the Freon method show that the results obtained from 1664A are comparable to the Freon method for some industrial discharges. However, for other industrial categories, differences may be significant. Overall recovery is improved using method 1664A.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 2008-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more