Abstract
Fluoride was shown to be a conservative constituent of sea water. Samples from the eastern tropical North Pacific, the Caribbean, the Labrador Basin, and the Reykjanes Ridge region indicated that the most probable F Cl ratio in sea water is 6.71·10 -5 with an overall uncertainty of ±0.07·10 -5 based on 99% confidence limits of ±0.02·10 -5 and an allowance of ±0.05· 10 -5 for systematic error. Double-blind measurements from laboratories using electrometric and spectrophotometric methods agreed closely. Mean F Cl ratios found were all within 0.7% of the most probable value.
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