At very low relative humidities the rate of evaporation increases and the slope of the evaporation line will be less than 8, closer to 4; for moderate relative humidities (say 50% give or take) the slope will be around 5; only for relatively high humidity levels does the slope approach 8 that we see as the slope of the global meteoric water line.
All that being said, a system with a slope as low as 1 is unchartered territory for me. Have you got Gabe Bowen's e-mail? He will be able to tell you more.
Prof. Dr W Meier-Augenstein, CChem, FRSC
Stable Isotope Forensics & Analytical Sciences
Robert Gordon University
School of Pharmacy and Life Sciences
The Ian Wood Building
E-mail: [log in to unmask]
From: Stable Isotope Geochemistry <[log in to unmask]> on behalf of Leela S <[log in to unmask]>
Sent: 30 March 2018 15:41:29
To: [log in to unmask]
Subject: [ISOGEOCHEM] Oxyegn-Hydrogen relationship in water
I attended a talk recently where the speaker showed LMWL with a slope of nearly 1. I thought it was 8 or less than in very evaporative systems. Has any one experience with such a low slope?
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