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Environmental Geosciences; June 2007; v. 14; no. 2; p. 111-112; DOI: 10.1306/eg.013007R07002
© 2007 American Association of Petroleum Geologists (AAPG)
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discussion

Age significance of n-C17/Pr ratios in forensic investigations of refined product and crude oil releases: Reply

Richard W. Hurst1 and Gene W. Schmidt2

1 Hurst & Associates, Inc., 9 Faculty Court, Thousand Oaks, California 91360; Alasrwh@aol.com
2 Gene W. Schmidt Environmental Consulting, 11619 S. Hudson Place, Tulsa, Oklahoma 74137; envirodog@aol.com

The first 20% of the full text of this article appears below.

First, we appreciate the recognition by Oudijk of our efforts to revise and better constrain our understanding of the factors associated with the application of and limitations associated with the use of n-C17/Pr ratios to estimating the age of middle distillate releases in the environment. Our evaluations included statistical evaluations of the initial n-C17/Pr ratios of approximately 4500 crude oils throughout the world and 90–100 products refined from these crude oils (or blended crude oils). The article also assessed the impact of diverse climatic conditions that could impact the degradation rate of n-C17/Pr ratios of product releases in different geographic areas.

Oudijk continually refers to the Christensen and Larson (C&L) model, apparently relegating the Middle Distillate Degradation (MDD) . . . [Full Text of this Article]




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Y. Galperin and I. R. Kaplan
Age significance of n-C17/Pr ratios in forensic investigations of refined product and crude oil releases: Discussion
Environmental Geosciences, June 1, 2008; 15(2): 85 - 86.
[Full Text] [PDF]


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