| 21. | Bioassay-guided fractionation is a common method to find biologically active compounds.
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| 22. | Field flow fractionation is based on laminar flow of particles in a solution.
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| 23. | These isomers are thermally interconvertible but can be separated by low temperature fractionation.
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| 24. | Electrofiltration is regarded as an appropriate technique for concentration and fractionation of biopolymers.
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| 25. | This assumes that the conversion to graphite does not introduce significant additional fractionation.
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| 26. | Now the measured fraction modern can be determined, by correcting for fractionation.
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| 27. | This phenomenon is known as Natural Isotopic Fractionation ( see Figure 3 ).
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| 28. | Isotopic fractionation in the hydrologic cycle for more details]
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| 29. | Some of the magmas underwent fractionation after their formation, but not all.
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| 30. | Calcium isotope fractionation during mineral formation has led to several applications of calcium isotopes.
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